Bunuel wrote:

Bumping for review and further discussion*. Get a kudos point for an

alternative solution!

*New project from GMAT Club!!! Check

HEREQuestion: Its a value question, we need to know the units place of x, so irrespective of the no if we can get the same units place always, this should be fine.

(1) x = (25^2)/(10^n)

n is an integer, can be positive/negative and even/odd anything.

With any little slight change in value of n the units place digit will change => Not sufficient

(2) n^2 =1

Well n's units place must be always 1, but what about the relation b/w n and x? we still dont know anything about x => Not sufficient

Both combined. (1) + (2)

take n= -1 and n=1

again without any calculation we can see that we will get x=6250 and 62.5 respectively => Not sufficient

Ans=>E

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