Bunuel wrote:
When 15n, where n is a positive integer, is divided by 6, the remainder is x. What is the value of x?
(1) When n is divided by 2, the remainder is 0.
(2) When n is divided by 3, the remainder is 0.
Hi everyone,
we can write the question statement as follows: 15n= 6q +x
Now: 5*3n=3*2q + x ---> 5n=2q + x
The question now is
"is n divided by 2? and if not what's n?"Statement 1 clearly tells us that n is divisible by 2.
Hence sufficient.statement 2 tells us that n is divisible by 3 but we don't know whether it is also divisible by 2.
Hence not sufficientOption A