Bunuel wrote:
If n is a positive integers, is n/6 an integer?
(1) n is a product of three consecutive integers.
(2) n is a multiple of 3.
1) n= x(x+1)(x+2) as x>0 & x integer , out of the the product of three consecutive will have a factor as 2 and a factor as 3.
==> n is divisible by 6 ==> n/6 is an integer. ..............................S
2) n=12 (3*4).... n is divisible by 6
n=15 (3*5).....n is not divisible by 6.................................NS
Answer A
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