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	Deux nombres consécutifs		2010-01-18
		Janot pose la question : Bonjour comment peut on faire pour démontrer que si deux nombres sont consécutifs, leur produit et leur somme sont premiers entre eux Merci de me mettre sur la voie , j'ai échoué avec Bezout. Claude Tardif lui répond.
	2^(2^1954) est-il premier?		2005-10-04
		Un eleve pose la question : 2(21945)+1 est-il premier? Claude Tardif lui répond.
	The product of 3 integers is -24		2019-11-06
		Rick pose la question : This is a question on my sons pre-ap practice quiz. I think that there is information missing (?) The product of 3 integers is -24 The sum of 3 integers is -12 What are the 3 integers ? This is exactly how it was written on his quiz paper. I have wasted to much time on the internet, trying to find a formula(s) to help him. Please help me. Penny Nom lui répond.
	A question about perfect squares		2018-02-04
		Jolyn pose la question : Find the smallest possible value of a whole number m if 648x m is a perfect square Penny Nom lui répond.
	27000001		2017-10-09
		Tulashiram pose la question : If a× b =27000001, then what is the value of a & b ? Penny Nom lui répond.
	Factors		2017-08-16
		Gemma pose la question : Why do 315 and 525 have the same number of factors? Penny Nom lui répond.
	The product of a 2-digit number and a 3-digit number		2015-02-06
		Nathaniel pose la question : The product of a 2-digit number and a 3-digit number is about 50 000 what are the products Penny Nom lui répond.
	Mutually prime composite numbers		2015-01-09
		nivedita pose la question : Two composite number that is mutually prime? Penny Nom lui répond.
	The units digit of a prime		2015-01-08
		Patricia pose la question : Every prime number greater than 10 has a digit in the ones place that is included in which set of numbers below 1 3 7 9 or 1 3 7 or 0 2 4 5 6 8 or 1 3 5 9 Walter Whiteley lui répond.
	Prime factorization in exponent form		2014-10-31
		Emma pose la question : I need to find out how to make a prime factorization of 120 in exponential form. Penny Nom lui répond.
	Sieve of Eratosthenes		2014-10-03
		Hope pose la question : using Sieve of Eratosthenes to determine for in instance prime numbers between 1 to 200, to what nth number should i stop?, 4th, which is 11 or what? Robert Dawson lui répond.
	Prime factorization		2014-02-06
		Kadeejah pose la question : Write the prime factorization of 37 in exponential form Penny Nom lui répond.
	GCD		2013-05-20
		Julia pose la question : Prove that if a and b are coprime integers, the greatest common divisor of a + b and a - b is either 1 or 2. Penny Nom lui répond.
	A four digit number		2012-10-09
		cyndi pose la question : find this 4 digit number: the tens digit is 1/3 of the hundreds digit; the 2 digit number formed by the tens and ones digits i the largest prime number smaller than 40; the sum of all 4 digits is the same as the number of face on an icosahedron ? what is the number? Penny Nom lui répond.
	What is the prime factor form of 7/5?		2012-04-17
		David pose la question : What is the prime factor form of 7/5 Robert Dawson lui répond.
	The units digit of a prime number		2011-11-22
		Mike pose la question : Every prime number larger than 10 has a digit in the ones place that is included in which set of numbers below? A. 1,3,7,9 B. 1,3,5,9 C. 0,2,4,5,6,8 D. 1,3,7 Penny Nom lui répond.
	The LCM of 6,15 and x is 90		2011-10-30
		Richie pose la question : Hi there, There are 2 parts to the question. #1. Factorise 90. This is easy, 90=2x3x3x5 #2 LCM of 6,15 and x is 90. What are possible values of x if x is odd? From #1, since 90=6x15, how can this be used to work out possible values of x? Thanks in advance, Richie Penny Nom lui répond.
	One factor array		2011-09-16
		Hana pose la question : hi my brother a 5th grade have a question. this is what it say "i have only one factor array, and i am between two numbers 12 and 16. what number am i?" Penny Nom lui répond.
	What is the largest prime number?		2010-11-20
		vadali pose la question : what is the largest prime number? Penny Nom lui répond.
	Powers		2010-10-20
		dylan pose la question : how do you write 20736 in exponential form .same for 1728 and 50625. is there a formula to figure out how to express large know numbers in exponential form. Penny Nom lui répond.
	Adding five positive integers that have a product of 48		2010-04-27
		Lorraine pose la question : What is the smallest possible sum that can be obtained by adding five positive integers that have a product of 48. Chris Fisher lui répond.
	The cardinality of the prime numbers		2009-11-07
		Justin pose la question : Hello there, I was just wondering since the number of primes is infinite, are they equal to infinity or Aleph-null? Justin Robert Dawson and Victoria West lui répond.
	The cube of a number plus five times the number plus 1		2009-10-12
		JP pose la question : Find a counterexample to the statement: The cube of a number added to the sum of five times the number and 1 is a prime number.The cube of a number added to the sum of five times the number and 1 is a prime number Penny Nom lui répond.
	What is my number?		2009-09-18
		Hanna pose la question : What is my number? My number is a perfect square. The only number in its prime factorization is 2. My number is a factor of 32. The sum of its digits is odd. Penny Nom lui répond.
	Exponential form		2009-08-31
		cecil pose la question : what is the exponent form 564000? Stephen La Rocque and Harley Weston lui répond.
	Primes		2009-06-25
		Chinonyerem pose la question : If p = 2^k - 1 is prime, show that k is an odd integer, except when k = 2. [ Hint: 3/4^n - 1 for all n >= 1.] Robert Dawson and Penny Nom lui répond.
	GCD (a + b, a - b).		2009-04-01
		Tomas pose la question : Let a and b integer and relatively prime. Prove that: GCD (a + b , a - b) = 1 or 2 Stephen La Rocque lui répond.
	The factors of an integer		2009-01-06
		Madison pose la question : what are the factors of 878 Robert Dawson lui répond.
	Do all square numbers have an odd number or factors?		2008-12-11
		Amy pose la question : Do all square numbers have an odd number or factors? Victoria West lui répond.
	Some number theoretic speculations		2008-12-04
		Andrew pose la question : Another way of looking at the 'alternating parity polynomial', again based on Fermat's Little Theorem, is to substitute (a - b) for x in x^(p-1) - 1 as this is always divisible by any prime p. So, if one removes the "- 1", there is always a remainder of (1/p)! (I took up your challenge!) . . . Andrew Chris Fisher and Victoria West lui répond.
	Primes and polynomials		2008-11-24
		Andrew pose la question : How effective are the two pairs of polynomials, taken together, at "excluding" any prime p. 1. (a^2 - a.b + b^2) and (a^2 + a.b + b^2) Where b > a > p and (a, b, p) = 1 2. (c^2 - c.a + a^2) and (c^2 - c.b + b^2) Where c > b > a > p and (a, b, c, p) = 1 Victoria West lui répond.
	A question about primes and polynomials		2008-11-16
		Andrew pose la question : Is it possible for (a^2 - a.b + b^2) to be divisible by a prime p where b > a > p and a, b, and p are relatively prime? I let a = n.p + x and b = m.p + y (where both x and y are < p) and after dividing throughout by p one gets to decide whether (x^2 - x.y + y^2) ==0 mod(p) ?! It seems unlikely unless p = (x^2 - x.y + y^2)? (Note:- All letters represent positive integers.) Chris Fisher and Victoria West lui répond.
	The prime factorization of one billion		2008-11-02
		Alta pose la question : The prime factorization of 1000 is 2 cubed times 5 cubed. How do you write the prime factorization of one billion using exponents? Penny Nom lui répond.
	Prime factorization		2008-10-19
		nick pose la question : while im doing prime factorization for one number and it cant be divided 2,3 or five so what next? Penny Nom lui répond.
	Product of Two-Digit Numbers		2008-07-31
		pete pose la question : The number 4641 can be expressed as the product of two two-digit whole numbers. What is the sum of these two numbers? Janice Cotcher lui répond.
	Neither prime nor composite		2008-07-08
		saloni pose la question : Give the counting number which is neither prime nor composite ? Penny Nom lui répond.
	The square root of (18*n*34)		2008-07-01
		Peter pose la question : What is the least possible positive integer-value of n such that square root(18*n*34) is an integer? Penny Nom lui répond.
	The smallest number divisible by 1 to 9		2008-06-26
		Peggy pose la question : What is the smallest number divisible by each of the first nine counting numbers? Penny Nom lui répond.
	Prime factors		2008-05-21
		john pose la question : the first 5 prime numbers are 2,3,5,7,11. which is the smallest number that has these prime factors. Stephen La Rocque lui répond.
	Why is the number 1 neither prime nor composite?		2008-02-07
		ronni pose la question : why is the number 1 neither prime nor composite? Harley Weston lui répond.
	A positive integer with 2007 digits		2008-02-06
		Tom pose la question : Prove that there's a unique positive integer of 2007 digits lenght, divisible by 2^2007, and made up solely by the digits 2 and 5. Penny Nom lui répond.
	(1x2x3x...n)+1		2008-01-29
		Sayuri pose la question : what is the smallest natural number n, greater than 1, for which (1x2x3x...n)+1 is not a prime? Penny Nom lui répond.
	Prime factorization		2007-11-11
		jeff pose la question : find the prime factorization and use exponential notation for 432 Penny Nom lui répond.
	Why is the number 1 neither prime nor composite?		2007-11-08
		amarilis pose la question : why is the number 1 neither prime nor composite? Penny Nom lui répond.
	I am a prime number		2007-10-31
		sherry pose la question : I am a prime number. I can not be shared fairly except by one group. My array can only be one row. array can only be one row. Can you please explain this out to me so I can help my child with it. Thanks Penny Nom lui répond.
	An array for 31		2007-10-31
		sherry pose la question : How do you make an array with the number 31 Penny Nom lui répond.
	13 year and 17 year locusts		2007-10-12
		stefan pose la question : how many years pass between the years when both 13 year and 17 year locusts are out at the same time? Penny Nom lui répond.
	Cubes		2007-09-21
		Yvonne pose la question : The numbers 756 and 72, expressed as products of prime factors, are 756 = 2² x 3³ x 7 and 72 = 2³ x 3² Use these result to find, the smallest integer, x, such that 756x is a perfect cube. Penny Nom lui répond.
	Prove that any two consecutive integers are relativley prime.		2007-09-18
		Michael pose la question : Im not very good at proofs and I was wandering if you would be able to help me with the following question: Prove that any two consecutive integers is relativley prime. Thanks a million. Penny Nom lui répond.
	How far from n do you need to go to have found at least one prime?		2007-09-16
		Mike pose la question : Hi, I was wondering if there was some kind of guaranteed interval that ensures that if you start at some number n, you will always have passed a prime number p. I remember having once read something that there is always at least one prime between n and 2n, but I cannot for the life of me remember where I read that, or what that kind of rule would be called so I can look it up online... thank you for your help, Mike Penny Nom and Victoria West lui répond.
	Prime factors in exponential form		2007-09-06
		Michelle pose la question : how would you write this: factor 48 as a product of primes written in exponential form Stephen La Rocque lui répond.
	How many stairs in the flight are stepped on exactly once?		2007-09-03
		Bill pose la question : Four friends are racing together down a long flight of stairs. A goes 2 steps at a time, B 3 at a time, C 4 at atime and D 5 and at a time. The only steps on which all four tread are the top one and the bottom one. How many stairs in the flight are stepped on exactly once. Harley Weston lui répond.
	Prime numbers and square numbers		2007-05-22
		Naseer pose la question : I read somewhere that prime number can be a factor of square only if it occurs at least twice in its square please explian this with examples. Penny Nom lui répond.
	If the product of A,B,C is 15834, what is A+B+C?		2007-03-10
		rachel pose la question : if the product of A,B,C is 15834, what is A+B+C? Penny Nom lui répond.
	Is c relatively prime to (n.p)?		2007-03-02
		Andrew pose la question : Please could you help me with a small mathematics problem?! I've put = the problem into three parts but it isn't really three problems; just = one! Given:- {[(n.p)^p] / [c + (n.p)]} =3D "an integer" (where c > = (n.p); c and n are integers, n is even and p is an odd prime number) Can one prove that c cannot be relatively prime to (n.p)? { i.e. c = must have the factor (n.p) ?} If so, is the converse also true? {i.e. If c is relatively prime to = (n.p), then [c + (n.p)] cannot be a factor of (n.p)^p ?} Lastly but similarly, if c is relatively prime to a and c > a > = (n.p) ; (c - a) > (n.p) **; and c is not relatively prime to (n.p) = would it be true that (c - a) cannot be a factor (n.p)^p ? I hope my question makes sense? Penny Nom lui répond.
	Three distinct prime factors		2007-02-15
		nick pose la question : what is the smallest natural number that has three distinct prime factors in its factorization Stephen La Rocque lui répond.
	Why zero is neither prime nor composite?		2007-01-17
		Brenda pose la question : Why zero is neither prime nor composite? Penny Nom lui répond.
	Prime numbers		2007-01-16
		A student pose la question : are the product of two prime numbers always prime? Penny Nom lui répond.
	Show that 3k+2 and 5k+3 are relatively prime		2007-01-15
		Andrea pose la question : show that if k is a positive integer, then 3k+2 and 5k+3 are relatively prime Penny Nom lui répond.
	The sum of prime numbers		2006-11-28
		Rambabu pose la question : I would like to know the sum of prime numbers below some X say 10000. Provide me with easy way to get this done Penny Nom lui répond.
	The greatest common factor of two numbers		2006-07-16
		Fadwa pose la question : What is the greatest common factor(GCF) of the following algebraic expressions? 1680 and 6048 Stephen La Rocque lui répond.
	How many numbers are relatively prime with 250?		2006-04-19
		David pose la question : How many positive integers less than or equal to 250 are relatively prime with 250? Stephen La Rocque lui répond.
	given that p is a prime and p|a^n, prove that p^n|a^n		2006-03-24
		Janna pose la question : given that p is a prime and p|an, prove that pn|an Stephen La Rocque lui répond.
	The Least Common Multiple of two primes		2006-02-21
		Kristine pose la question : Is the Least Common Multiple to two prime numbers always their product? Why or Why not? Stephen La Rocque lui répond.
	How many divisors does the number 138600 have?		2006-02-08
		Joe pose la question : How many divisors does the number 138600 have? Steve La Rocque and Penny Nom lui répond.
	Write the array for 3		2006-01-29
		Jamie pose la question : My son is a 5th grader and came home with a math question that I can't answer. The question stated - "Write the array for 3" I don't understand how this can be done with just one number. Penny Nom lui répond.
	GCF, LCM, primes and the ladder method		2006-01-07
		Linda pose la question : How would I teach both finding the GCF and LCM with prime factors...I recall the ladder method vaguely.??? Penny Nom lui répond.
	LCM		2005-12-12
		Alex pose la question : what is the LCM of 210 and 54 and the LCM of 42 and 126 Penny Nom lui répond.
	Divisibility by each of the first ten counting numbers		2005-10-17
		Simon pose la question : determine smallest positive integer that is divisible by each of the first ten counting numbers Penny Nom lui répond.
	A two digit prime		2005-09-12
		A student pose la question : The units digit of a two-digit prime number is not greater than the tens digit by 3.If the positions of the two digits are interchanged, then the new number formed is greater than the original number by more than 18. Find the value of the original prime number. Penny Nom lui répond.
	n^2+n-1 has no divisors ending with 3 or 7		2005-09-08
		Arne pose la question : at least it seems like for any integers n and k, 10k+3 and 10k+7 do not divide n²+n-1 I tested this for every n from 0 to 3200 (which means same for the numbers from -3201 to -1) could this be true, or is it just coincidence, or am I just totally wrong? Richard McIntosh lui répond.
	Three prime numbers p,q and r, all greater than 3, form an arithmetic progression:		2005-07-18
		Ladis pose la question : Three prime numbers p,q and r, all greater than 3, form an arithmetic progression: p=p, q=p+d and r= p+2d. Prove that d is divisible by 6. Chris Fisher lui répond.
	p+1, p+2 y p+4 are prime		2005-06-18
		Vincent pose la question : Find all the values of p (where p is a natural number), for which the numbers p+1, p+2 y p+4 are prime. Penny Nom lui répond.
	Primes		2005-06-04
		Fede pose la question : Prove that there is not a number prime p, for which the numbers p+5 and p+10 are prime too. Penny Nom lui répond.
	The numbers p and 8p^2 +1 are prime.		2005-05-30
		Antonio pose la question : The numbers p and 8p2 +1 are prime. Prove that the number 8p2+2p+1 is also a prime number. Claude Tardif and Penny Nom lui répond.
	Prime numbers		2005-04-11
		Jesule pose la question : Given that p, p+10 and p+14 are prime numbers, find p. Claude Tardif and Chris Fisher lui répond.
	Numbers that John likes		2005-01-16
		Garrett pose la question : John likes 400 but not 300; he likes 100 but not 99; he likes 3600 but not 3700. Which does he like? 900 1000 1100 1200 Penny Nom lui répond.
	252 x ? is a cube		2004-12-22
		Andrea pose la question : What is the smallest positive interger by which 252 can be multipled so the result is a perfect cubed? Penny Nom lui répond.
	The lcm of 5, 3, 4, 7 and 2		2004-11-05
		Christine pose la question : what is the lcm of 5,3,4,7,2 Penny Nom lui répond.
	an integer with three factors		2004-08-03
		A student pose la question : What is the probability that a randomly chosen 3 digit number has exactly 3 factors Penny Nom lui répond.
	Divisors of 2n+1 and 3n+9		2004-06-02
		Chris pose la question : Amy selected a positive integer N and wrote numbers 2xN+1 and 3xN+9 on a whiteboard. Boris looked at the two numbers on the whiteboard and wrote in his notebook a positive integer that divides each of them. Find all possible numbers that Boris could have written in his notebook. Chris Fisher and Penny Nom lui répond.
	(2^ 20,966,011) - 1		2003-12-12
		Reid pose la question : Can someone please explain, answer and/or solve this: (2^ 20,966,011) - 1 I don't know what it means, my boss sent it out, I'm assuming it is to be solved but don't know what it is, any prompt help would be appreciated, very much so, in fact, thanks,........... Penny Nom lui répond.
	If 1 is neither prime nor composite...		2003-11-19
		Joshua pose la question : if 1 is neither prime nor composite...what is it called? Claude Tardif and Penny Nom lui répond.
	If 1 is neither prime nor composite...		2003-11-19
		Joshua pose la question : if 1 is neither prime nor composite...what is it called? Claude Tardif and Penny Nom lui répond.
	What is a number that has exactly 13 factors?		2003-11-09
		Mary pose la question : What is a number that has exactly 13 factors? Penny Nom lui répond.
	Pairs of prime numbers		2003-10-13
		Nikolas pose la question : Use pairs of prime numbers to find all the numbers less than 50 that have only two prime factors. Make an organized list. Penny Nom lui répond.
	Relatively prime		2003-09-27
		James pose la question : what is the definition a relative prime numbers? Penny Nom lui répond.
	Primes		2003-09-23
		Julie pose la question : #1. Suppose you are given a number (n) and told that 1 and the number (n) divide into (n). Does that mean (n) is prime? #2. Suppose that p is a prime number greater than or equal to 3. Show that p+1 cannot be a prime number. Penny Nom lui répond.
	The Sieve of Eratosthenes		2003-09-18
		Lynn pose la question : My daughter has been asked to find all the prime numbers by using the Sieve of Eratosthenes. I have no understanding what this means. Penny Nom and Claude Tardif lui répond.
	Making a square		2003-09-07
		A student pose la question : if I am given any number (say 80 for example), how may I determine the smallest whole number integer which when multipled by it will yield a square number ? In other words if I express this as: 80Ý*ÝnÝ=ÝsquareÝnumber, what is the least value of n which will yield a square. Penny Nom lui répond.
	1575		2003-03-13
		Sharyn pose la question : find 6 integers that when multiplied with each other equal +1575 and when the same integers are added together equal zero. there are more positives than negatives and one of the numbers is a double digit between 10 and 20 Penny Nom lui répond.
	X times Y equals ten million		2003-02-26
		Baneen pose la question : Would you be able to tell me which two numbers would compute ten million without any number having zeros in it? Penny Nom lui répond.
	Composites, primes, factors and common factors		2002-11-20
		Connie pose la question : My son can't remember what a composite number is, what a prime number is and the explaination of factors and common factors. Help! Penny Nom lui répond.
	Why is 5 divided by 1/7 greater than 5 divided by 2/3?		2002-11-19
		Elizabeth pose la question : Without performing the division, explain why 5 divided by 1/7 is a number greater than 5 divided by 2/3. Is the least common multiple of two prime numbers always their product? Why or why not? Diane Hanson and Penny Nom lui répond.
	Prime numbers		2002-11-08
		Lonna pose la question : Is 2 a prime number or not?? Why is 1 not considered a prime number? Penny Nom lui répond.
	Is it a prime?		2002-10-19
		JV pose la question : 6x to the third power plus 5x plus 15, is that prime or not prime, and whichever it is, how can you prove it? ya dig? Claude Tardif lui répond.
	Relatively prime		2002-10-04
		Natasha pose la question : I really need help with this middle level math question. My little brother is asking me and I have no clue what the answer is. Explain what it means when two numbers are negatively prime. (?) Kathy Nolan and Penny Nom lui répond.
	Divisibility of 5 2002		2002-08-25
		Simon pose la question : I need to ask you a question if 5 2002 and 3 2002 are divisible by 26. Penny Nom lui répond.
	Primes and square roots		2001-06-14
		Paul pose la question : I have a bit of a math problem. It has to do with determining if a very large number is a prime. One method entails dividing the number by every smaller prime number. If any divide into it, it's not a prime. This would be a big job if the number was something like 400 digits long. Another way I read about was to take the square root of the number and test all the primes less than its square root. The explanation went like this: "When a number is divided by another number that is greater than its square root, the result is a number smaller than the square root. For example, the square root of 36 is 6. Dividing 36 by 2, a smaller number than 6, gives 18, a number that is larger than the square root. To prove that 37 is prime it is only necessary to divide it by primes less than 6, since if it had a prime factor greater than 6, it would have to have one less than 6 as well." I understand the explanation, up to the last sentence. I fail to see the underlying logic. Why if a prime factor exists below the square does one have to exist above the square too? The number 40 can be divided by the prime 2, a number below its square root, but no other primes can do this above its square root. Have I missed something? What's the logic here? Claude Tardif and Penny Nom lui répond.
	Neither prime nor composite		2001-05-08
		Marc pose la question : what 2 numbers are neither prime nor combitative? Penny Nom lui répond.
	Probability and a three digit number		2001-03-15
		Glenn pose la question : A THREE DIGIT NUMBER IS SELECTED AT RANDOM. WHAT IS THE PROBABILITY THAT NON OF THE THREE DIGITS ARE PRIME. Harley Weston lui répond.
	Two number theory questions		2001-01-30
		Richie pose la question : i have two questions and they are: the product of three consecutive prime numbers is 7429. Find the product of the smallest and largest of these three integers. the least common multiple of two relatively prime positive integers, a and b, is 144. if a (a>or=2) is as small as possible, compute the value of b. Penny Nom lui répond.
	What number from 1 to 25 has the most factors?		2001-01-23
		John pose la question : What number from 1 to 25 has the most factors? Penny Nom lui répond.
	A pair of numbers whose GCF is 28		2000-12-27
		John pose la question : Name 2 different pairs of numbers whose GCF is 28. Penny Nom lui répond.
	Some prime conjectures		2000-12-24
		Tarrasita pose la question : I was given some homework to investigate the following conjectures on prime numbers 1) There is at least one prime between consecutive square numbers. 2) Every prime except 2 and 3 is of the form 6n+1 where n is a natural number. 3) Any odd prime which is of the form 4n+1 is equal to the sum of two perfect squares. Harley Weston lui répond.
	Prime factorization		2000-12-13
		A student pose la question : What is the prime factorization for 250 1296 and 2400 Penny Nom lui répond.
	A zip code problem		2000-10-26
		Rob Mathis pose la question : Find the zip code of a place in a county so that the product of it and the zip code of another place in another county of the same name, but in a different state, is an exact multiple of the number 123456789 Claude Tardif lui répond.
	1234567890		2000-09-14
		Bradley Kloetzly pose la question : Can you find two whole numbers, with the smallest possible difference between them, which when multipled together equal: 1234567890? Harley Weston lui répond.
	Five times a cube equals three times a fifth power		2000-07-05
		Harman Chaudhry pose la question : Which is the smallest 10-digit number to be five times the cube of one number and also three times the fifth power of another? Penny Nom lui répond.
	How many zeros?		2000-04-09
		Greg Potts pose la question : The natural numbers 1 to 25 are multiplied together (1 x 2 x 3x..24 x 25). How many zeros are there in the product of this multiplication? a)6 b)7 c)5 d)10 or e)4? Harley Weston lui répond.
	2^32 + 1		2000-04-08
		Un Etudiant pose la question : 232 +1 can be divided by 641 , why? Claude Tradif lui répond.
	Symmetric Primes		2000-04-01
		Marlene Moore pose la question : Hi...Im in 9th grade and am having a hard time figuring out symmetric primes. Heres the problem: Find two pairs of symmetric primes of 20. Symmetric primes of 15? Claude Tardif lui répond.
	Division		2000-03-16
		Charday pose la question : What is the easiest way to calculate the least number that can be divided evenly by all the numbers from 1 to 10. Penny Nom lui répond.
	10 000 000 = a x b		2000-03-06
		Spencer Jaffe pose la question : What two numbers that don't end in zero, multiplied equal 10,000,000. Claude tardif lui répond.
	Factoring, primes, GCF and LCM		2000-02-27
		Ruth Kroek pose la question : My son is in grade seven, he has to do a Factoring Booklet the areas covered are: Prime #'s Composite #'s Rainbow Factoring Finding Multiples (consecutive multiples) Finding GCF of 2-3 numbers uning Rainbow factoring Finding LCM of 2 numbers using consecutive multiples prime factor trees prime factor ladders finding GCF of 2 numbers using Prime number Method Although his text 'Math Power' gives some information, we are at a loss .. Penny Nom lui répond.
	Three factors		2000-02-21
		A parent pose la question : Question from a parent helping a child, grade 4, with homework. Can a number have three factors? Name three numbers that have three factors. Penny Nom lui répond.
	Three algebra problems		1999-12-28
		Stephanie Branton pose la question : If P represents the product of all prime numbers less than 1000, what is the value of the unit's digit of P? Do any real numbers a and b exist such that: ln(a+b)=ln a + ln b? if so, what are they? Define a function by: f(x)=1/1-x where x is not equal to 0,1. what is f(f(f(a)))? Harley Weston lui répond.
	T-shirts		1999-04-04
		Valerie pose la question : At a discount T-shirt shop the manager marked a special batch of T-shirts that originally sold for $2.00. When all the shirts sold the shop had collected $603.77. How many shirts did they sell and what was the price per shirt? Jack LeSage and Penny Nom lui répond.
	Prime dates		1999-03-25
		Jessica Brown pose la question : I'm asking how do you figure out all the prime numbers in a year and, whats the average amount of prime numbers per week. Jack LeSage and Penny Nom lui répond.
	Five Factors		1998-09-19
		Derek Yau pose la question : To whom it may concern, I have difficulty in getting the solution to the following question: Find 5 numbers that have exactly 5 factors. I got 16, 81 but couldn't find the rest. I believe that in order to have 5 factors, it has to be a square number. Isn't it true? I guess there may be a pattern to this. Thanks for your help. Derek Yau. Penny Nom lui répond.
	Divisors of 6n		1998-01-26
		James pose la question : If n is a positive integer such that 2n has 28 positive divisors and 3n has 30 positive divisors, then how many positive divisors does 6n have? (a) 32 (b) 34 (c) 35 (d) 36 (e) 38 Penny Nom and Haragauri Gupta lui répond.
	Negative Primes.		1997-11-10
		Leah Zucker and Paul Michael pose la question : I have received the following question via e-mail from my granddaughter: "Can negative numbers (like -7) be prime? If not, why not?" Chris Fisher lui répond.
	Two Questions		1997-10-28
		Melissa Kelley pose la question : I would appreciate any help you could give me. Why isn't 1 a prime number? How can the absolute value of a number be negative? Penny Nom lui répond.
	Prime Numbers		1997-09-04
		Jack Bedard pose la question : Hi. I have a real stupid question What are prime numbers? My name is Jack Bedard and I am in grade 5. Penny Nom lui répond.
	Divisibility of 2n choose n.		1996-09-24
		Kathy Doan pose la question : Can you prove that "2n choose n" is not divisible by 3, 5, and 7 for infinitely many n? Penny Nom lui répond.
	How do you find out if a number is a composite or prime?		1996-09-16
		Trish Feenstra pose la question : Hi my name is Trish Feenstra. In grade 8. How do you find out if a number is a composite or prime if it is big like 37 529? Reply soon got a test on Friday the 13th Denis Hanson lui répond.
	Prime numbers		1996-02-22
		Charles Hewitt pose la question : I would apprecaite it if you could share with me any algorithm to determine whether a number is prime. Penny Nom lui répond.

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