poul_249 wrote:
Could anyone please explain why OA is marked A. I think both the statements r sufficient . Ans should be D
Hi..
ans should be A
chetan2u wrote:
Is x divisible by 6, if x is an even integer?
(1) \(x=27!-17!\)
(2) \(x=3y\)
New Question
INFO given-
x is even integer..
(1) \(x=27!-17!\)
x=27!-17!=17!(18*19*..27-1)
17! is a MULTIPLE of 6, so ans is YES
suff
(2) \(x=3y\)
this is a TRAP...
it is nowhere given that y is an integer...x=3y....
say y is 20....ans is YES
BUT if y is \(\frac{20}{3}\)...x becomes 20 and ans is NO..
Insuff
A..
IMPORTANT...
80% answering it wrong shows us to be careful in reading the info provided