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Inequality help GMAT prep pack 1

by Neilsheth2 » Thu Nov 12, 2015 7:56 pm
how could it be C since if we plug in numbers lets say:-

a=-5 , b=5..Satisfying a<b
x=2 ,y=3 satisfying x<y...We get a YES answer for a^x<b^y



While when we plug
a=-7 , b=-5..Satisfying a<b
x=2 ,y=3 satisfying x<y...We get a NO answer for a^x<b^y


Need some help.

Thanks in advance!
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by GMATGuruNY » Thu Nov 12, 2015 8:55 pm
Neilsheth2 wrote:how could it be C since if we plug in numbers lets say:-

a=-5 , b=5..Satisfying a<b
x=2 ,y=3 satisfying x<y...We get a YES answer for a^x<b^y



While when we plug
a=-7 , b=-5..Satisfying a<b
x=2 ,y=3 satisfying x<y...We get a NO answer for a^x<b^y


Need some help.

Thanks in advance!
The values in red violate the constraint that a, b, x and y are POSITIVE integers.
Last edited by GMATGuruNY on Fri Nov 13, 2015 3:55 am, edited 1 time in total.
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by Neilsheth2 » Thu Nov 12, 2015 9:39 pm
Ok I just realised that I am not allowed to use negative numbers!

Anyways thank you Mitch!
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