Let n~ be defined for all positive integers n as the remainder when (n - 1)! is divided by n.
What is the value of 30~ ?  Choose the correct option
A) 1	B) 0	C) 2	D) 8	E) 31

Rationale: n ~ = ( n - 1 ) ! so 30 ~ = ( 30 - 1 ) ! = 29 ! when 29 ! / 30 we have 16 * 2 inside 29 ! hence 30 gets cancelled and we get remainder as 0 b
Answer: B