DS question--modified from Ron's video.

[dddanny2006]

Question source--Modified question --Ron Purewal video

Is m divisible by 8?
(1)mn is divisible by 8
(2)n is divisible by 8

Statement 2 is insufficient because n has nothing to do with m


Statement 1 says mn is divisible by 8. So in the prime box of mn we have a 2,2,2....?

For m to be divisible by 8 we need a 2,2,and 2. We dont know in statement 1 as to whether m or n has contributed to the 3 2's.

Therefore its insufficient.

I have doubts when combining the 2 statements.

mn primebox will have a 2,2,2...?

Statement 2 says n is divisible by 8 and thus the prime box of n will have a 2,2,2...?

Now were certain that the three 2's of the mn primebox are bought about by n from statement 2.Is it possible for the primebox of m to be empty or in other ways leaves the m primebox with just the dots and question mark like this "....?" only).Also answer the DS question via the same video method--Primebox .

Please clear this doubt Ron.

Thanks

Dan

[RonPurewal]

Hi,
This folder is for problems from the MGMAT CAT exams only. Please re-post the problem in the General Math folder.

Thanks.