Sujet: factorial liste de sujets
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	The largest integer k so that that 3335^k is a divisor of 3336!		2019-10-29
		Brandon pose la question : Hello my name is Brandon and I having difficulties in solving the following question: Given the number 3336! = 1.2.3.4........................3336 . What's the greater positive integer number k with the condition that 3335expk is a divisor of 3336! Thanks for your help. Penny Nom lui répond.
	Factorials		2017-07-27
		dinesh pose la question : Is there any shortcut formula for multiply series numbers. like 1x2x3x4x5.......x100 =? Penny Nom lui répond.
	An exercise with factorials		2016-02-07
		vidhi pose la question : find the value of n: (1-1/2) (2-2/3) (3-3/4)...(15-15/16) = n!/16 Penny Nom lui répond.
	Factorials		2014-06-06
		penny pose la question : What is factorial? For eg. Like 2!, 3! 4! Etc. Penny Nom lui répond.
	(1-1/2)(2-2/3)(3-3/4)...(15-15/16)=n!/16		2011-02-15
		Fiona pose la question : Could you help me find the value of n: (1-1/2)(2-2/3)(3-3/4)...(15-15/16)=n!/16 Penny Nom lui répond.
	Factorials		2010-03-23
		Leah pose la question : When should you use factorials? Robert Dawson lui répond.
	The tens digit of 0! + 1! + 2! + 3! + ... + 2000!		2009-12-21
		Alicia pose la question : What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000!? Robert Dawson and Penny Nom lui répond.
	The last non cero digit of a factorial		2009-06-12
		Wilson pose la question : How can I find the last non cero digit from a factorial calculation of a big number. For example 10! = 3628800, the last non cero digit is 8. What is the last non cero digit of 10! ?? Robert Dawson lui répond.
	The sequence 2n! - 1		2009-02-01
		Penny pose la question : I am trying to help my son with this problem. Find the first five terms of the sequence that can be written from the formula A= 2n !-1. Penny Nom lui répond.
	The tens digit of 0! + 1! + 2! + 3! + 4! .............+9999! + 10000!		2009-01-23
		Kaylyn pose la question : determine the tens digit for the expression: 0! + 1! + 2! + 3! + 4! .............+9999! + 10000! Robert Dawson and Penny Nom lui répond.
	n choose r equals n-1 choose r plus n-1 choose r - 1		2008-07-14
		fae pose la question : Prove that ( n ) = ( n – 1) + ( n - 1 ) ( r )         ( r )        (r-1) NOTE: the ( ) should be one for n taken r and so on. but there is no one big ( ) that will cater two lines Janice Cotcher lui répond.
	Sum of factorials		2008-01-26
		Emily pose la question : What is the tens digit in the sum 7! + 8! + 9! ... + 2006! Stephen La Rocque lui répond.
	Finding the last non-zero digits of large factorials		2007-10-04
		Mukesh pose la question : i have to find last five non zero digits of integer which can be very large ( upto 10^12) . i can find last non zero digit of of any factorial. Now my problem is that i have to find last five non zero digit of factorial and also i want to general method for last K non zero digits of factorial n. For example 10!=3628800 so last non zero digit is 8 ,last two non zero digit is 88 .....and last five non zero digit is 36288. Victoria West lui répond.
	Factorial fraction		2007-08-03
		Sekhoane pose la question : Expand completely: (N-2)!/N!(9N-1)! Stephen La Rocque lui répond.
	Combinations		2007-05-09
		Michael pose la question : Show that 5 X C(n,5) = n X C(n-1,4) Stephen La Rocque lui répond.
	Probability of getting an A		2007-05-09
		Christine pose la question : In a class of 15 people, exactly 3 got an A. If 2 people are randomly chosen from this class, what is the probability that at least one of these 2 got an A? Paul Betts lui répond.
	n-1/(n+1)! + n+1/n!		2007-03-18
		Cody pose la question : How do you go about simplifying something like this; n-1/(n+1)! + n+1/n!? Steve La Rocque and Claude Tardif lui répond.
	How to find the odds for a lottery jackpot		2006-04-12
		Harvey pose la question : Is it best to use factorials to calculate the odds of winning a lottery, such as the MegaMillions that is popular in the US, or is there a better way? Stephen La Rocque lui répond.
	Prove that p^n >= (p!)/(p-n)!		2006-02-02
		Rhydian pose la question : PROVE: pn >= (p!)/(p-n)! Penny Nom lui répond.
	Four people are in a race		2006-01-26
		Tammy pose la question : If 4 people are in a race, how many different placements, i.e., 1st, 2nd, 3rd, 4th, can there be and what is the equation? Penny Nom lui répond.
	112!		2004-05-28
		Beatriz pose la question : 1) A bus driver collects identical sets of 5 coins from each passenger. If the totoal colledted was $21.83, how many pennies did the driver get?? 2) How many terminal zero in the base 10 expression of 112! (factional) N! means N(N-1)(N-2) .....(2) (1). Penny Nom lui répond.
	n! > n^2		2004-03-30
		Jose pose la question : How can you prove by mathematical induction that: n! > n2. Penny Nom lui répond.
	When is 1! + 2! + 3! + ... + x! a square?		2002-08-19
		Sarathy pose la question : Solve : 1! + 2! + 3! + ... + x! = y 2 How do i find the solutions ? Claude tardif lui répond.
	Why is 0! = 1?		2001-01-30
		Diane pose la question : Every math book always claims that 1!=1 and 0!=1 are givens, and that we should just memorize it. i understand the 1! part, but where is the basis for claiming that 0!=1???? Walter Whiteley lui répond.
	Four crayons		2001-01-10
		Neyra Espinoza pose la question : You have four crayons (red, blue, yellow, green). If you line them up, how many different combinations can you get? Patrick Maidorn lui répond.
	n! = 42(n-2)!		2000-07-21
		Damon Bailey pose la question : Solve n! = 42(n-2)! Paul Betts lui répond.
	10,000!		2000-07-21
		Lauren pose la question : Hi I was just wondering if you could tell me how many zeros are in 100,000! (factorial.) Denis Hanson lui répond.
	Six digit numbers using 1,2,5,6,7, and 9		2000-03-20
		Rachel pose la question : How many different six-digit numbers can you make using the digits 1,2,5,6,7, and 9? How many of these six digit numbers are divisible by six? Claude Tardif and Denis Hanson lui répond.
	0! + 1! + 2! + 3! + ... + 2000!		1999-10-21
		Melissa pose la question : My name is melissa. I am a 9th grade student I am having trouble finding out how to do this: What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000! I know how to find these, but my calculator cant go any higher than 69! Is there any way i can do this problem? Penny Nom lui répond.
	0!		1997-03-02
		Donna D. Hall pose la question : I am looking for a quick and easy explanation as to why 0! is 1. Walter Whiteley and Denis Hanson 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.

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