Which of the following is equal to (y+1)!/y!?
Options.
A) y-1	B) 1+(1/y)	C) 1	D) y+1	E) y
(y + 1)! = (y + 1) * x!   (y + 1)!/y! = y + 1   Answer: y+1
<result>D</result>
Which of the following is equal to (y+1)!/y!?