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Alex rents a car for one day |
2019-10-31 |
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Arshia pose la question :
Alex rents a car for one day. The charge is $25 plus $0.20 per mile. Alex wants to spend exactly $110. How many miles can he drive?
Penny Nom lui répond. |
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The largest integer k so that that 3335^k is a divisor of 3336! |
2019-10-29 |
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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. |
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Even 5 digit palindromes |
2019-10-24 |
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daniel pose la question :
How many palindromes of 5 digits are even?
Penny Nom lui répond. |
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The center of a circle |
2019-10-24 |
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Patrick pose la question :
I'm trying to find a quick calculation to find the center of the circle that will touch the 3 points of an isosceles triangle.
Known dimensions are length of the triangle base and the height from the top point to the middle of the base.
Thanks in advance,
Kind regards,
Patrick
Penny Nom lui répond. |
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How many numbers from the set have the sum of its digits equal to 2? |
2019-10-24 |
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Marcel pose la question :
Hello. My question is the following: Given the set {1,2...........10exp2019}, how many numbers from the set have the sum of its digits equal to 2?
I got some of them : 2 20 200 2000 20000 .......2. 10exp2018 11 110 1100 11000 110000....101 1010 10100 101000 1010000....10011 10010 100100 1001000 1010000.....10001 100010 1000100 10001000,,,,,,100001 1000010 10000100.......
My problem is that I have difficulty in finding a strategy to obtain the exact quantity of numbers.
Please help me, thanks
Penny Nom lui répond. |
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The perimeter of a piece of a circle |
2019-10-18 |
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Arwin pose la question :
The radius of a circle is 17 cm. A chord XY lies 9 cm from the centre and divides the circle into two segments. Find the perimeter of the minor segment.
Penny Nom lui répond. |
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The domain of f + g |
2019-10-16 |
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Angel pose la question :
The domain of f+g when f(x)=8x+3 and g(x)=1-5x
Penny Nom lui répond. |
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How do you find the length and the width if all you had was area? |
2019-10-16 |
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Ali pose la question :
So, How do you find the length and the width if all you had was area?
Penny Nom lui répond. |
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Simultaneous equations |
2019-10-16 |
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deepak pose la question :
This is too complicated please help me
8/x - 10/y = 1 and x+y=9
Penny Nom lui répond. |
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The difference of two numbers is 42 |
2019-10-14 |
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Patrick pose la question :
The difference of two numbers is 42 and the larger number is 8/5 of the smaller number. Find the two numbers.
Penny Nom lui répond. |
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Arranging 10 digits |
2019-10-09 |
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Laxmi pose la question :
1)The integers 0 to 9 are arranged along a straight line in some order.a) find a possible arrangement in which the sum of any three adjacent numbers is less than 15.b)is there an arrangement of this kind 0 is not included in the numbers.
Penny Nom lui répond. |
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A binomial probability question |
2019-10-08 |
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venni pose la question :
The Medassist Pharmaceutical Company receives large shipments of aspirin
tablets and uses this acceptance sampling plan: Randomly select and test 24
tablets, then accept the whole batch if there is only one or none that doesn’t
meet the required specifications. If a particular shipment of thousands of
aspirin tablets actually has a 4% rate of defects, what is the probability that
this whole shipment will be accepted?
Penny Nom lui répond. |
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Four fours |
2019-10-03 |
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Irene pose la question :
Using number 4, four times with any equation and the answer will be -2 and -5
Penny Nom lui répond. |
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The binomial distribution |
2019-10-01 |
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PY pose la question :
An on-line game called ‘Shop Quiz’ is held by an e-commerce platform, from Monday to Friday
every week. It consists of 8 multiple choice questions (MCQ) and each question has four options (A, B, C, D). Only one option is the correct answer. People who are able to correctly answer all 8
questions are winners and will be awarded a number of on-line shopping credits.
Let X represent the number of questions that a person can answer correctly in a ‘Shop Quiz’.
1) Explain why Binomial distribution might NOT be a suitable distribution for the random variable
X.
Mr. Saul likes playing the quiz, however, he is afraid that he might not have the necessary knowledge to answer the quiz questions. (The quiz questions cover a variety of topics including science, history, entertainment, sports and geography, etc.) Therefore, he tries to win the game by simply guessing the answers to each question.
Penny Nom lui répond. |
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Four less than three times a number is 20 |
2019-09-29 |
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Linda pose la question :
four less than three times a number is 20,what is the number?
Penny Nom lui répond. |
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