Topic: factorials list of topics
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15 items are filed under this topic.

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	An exercise with factorials		2016-02-07
		From vidhi: find the value of n: (1-1/2) (2-2/3) (3-3/4)...(15-15/16) = n!/16 Answered by Penny Nom.
	Factorials		2014-06-06
		From penny: What is factorial? For eg. Like 2!, 3! 4! Etc. Answered by Penny Nom.
	(1-1/2)(2-2/3)(3-3/4)...(15-15/16)=n!/16		2011-02-15
		From Fiona: Could you help me find the value of n: (1-1/2)(2-2/3)(3-3/4)...(15-15/16)=n!/16 Answered by Penny Nom.
	Factorials		2010-03-23
		From Leah: When should you use factorials? Answered by Robert Dawson.
	The tens digit of 0! + 1! + 2! + 3! + ... + 2000!		2009-12-21
		From Alicia: What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000!? Answered by Robert Dawson and Penny Nom.
	The tens digit of 0! + 1! + 2! + 3! + 4! .............+9999! + 10000!		2009-01-23
		From Kaylyn: determine the tens digit for the expression: 0! + 1! + 2! + 3! + 4! .............+9999! + 10000! Answered by Robert Dawson and Penny Nom.
	n choose r equals n-1 choose r plus n-1 choose r - 1		2008-07-14
		From fae: 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 Answered by Janice Cotcher.
	Factorial fraction		2007-08-03
		From Sekhoane: Expand completely: (N-2)!/N!(9N-1)! Answered by Stephen La Rocque.
	Probability of getting an A		2007-05-09
		From Christine: 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? Answered by Paul Betts.
	n-1/(n+1)! + n+1/n!		2007-03-18
		From Cody: How do you go about simplifying something like this; n-1/(n+1)! + n+1/n!? Answered by Steve La Rocque and Claude Tardif.
	Prove that p^n >= (p!)/(p-n)!		2006-02-02
		From Rhydian: PROVE: pn >= (p!)/(p-n)! Answered by Penny Nom.
	n! > n^2		2004-03-30
		From Jose: How can you prove by mathematical induction that: n! > n2. Answered by Penny Nom.
	When is 1! + 2! + 3! + ... + x! a square?		2002-08-19
		From Sarathy: Solve : 1! + 2! + 3! + ... + x! = y 2 How do i find the solutions ? Answered by Claude tardif.
	10,000!		2000-07-21
		From Lauren: Hi I was just wondering if you could tell me how many zeros are in 100,000! (factorial.) Answered by Denis Hanson.
	0! + 1! + 2! + 3! + ... + 2000!		1999-10-21
		From Melissa: 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? Answered by Penny Nom.

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