Which of the following is equal to (x+1)!/x!? A. x-1 B. 1+

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Which of the following is equal to (x+1)!/x!?

A. x-1
B. 1+(1/x)
C. 1
D. x+1
E. x


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by Brent@GMATPrepNow » Wed Mar 23, 2016 7:28 pm
Max@Math Revolution wrote:Which of the following is equal to (x+1)!/x!?

A. x-1
B. 1+(1/x)
C. 1
D. x+1
E. x
(x+1)!/x! = (x+1)(x)(x-1)(x-2)...(2)(1)/(x)(x-1)(x-2)...(2)(1)
= x + 1
= D

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Brent
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