Which of the following integers is a divisor of(15!+15)? Choices:	A) 15	B) 14	C) 13	D) 7	E) 2
When we say 15!, it just means 1*2*3*4*5*...*13*14*15   So you need to find the integer which is a divisor of   (1*2*3*4*5*...*13*14*15 + 15) = 15 (1*2*3*4*5*...*12*13*14 + 1) We obtain this by taking 15 common.   Hence 15 is definitely a divisor of (15! + 15).   15
<result>A</result>
Which of the following integers is a divisor of(15!+15)?