Hi Hemanth,
It would be great if you could post each question separately.
It would be easier for everyone to respond and relate.
Thanks
Komal
not sure if i am wrong .
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Source: Beat The GMAT — Data Sufficiency |
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joshi.komal
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gabriel
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Guyz please do follow forum rules .. post one question per thread ... hemanth plz do not crowd the thread with questions .. you will get a much better response by sticking to the rules.
Regards
Regards
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xilef
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1st
The reason why A is also SUFF:
xz is even that means either x or z or both are even. If x is even, then y and z are even. If x is odd then z has to be even. So either way z is even.
2nd
The reason why B is INSUFF:
r > 100( sqrt 1.15 - 1 )
r > 7.2% doesn't answer the question is r > 8%
3rd
Look through earlier posts
The reason why A is also SUFF:
xz is even that means either x or z or both are even. If x is even, then y and z are even. If x is odd then z has to be even. So either way z is even.
2nd
The reason why B is INSUFF:
r > 100( sqrt 1.15 - 1 )
r > 7.2% doesn't answer the question is r > 8%
3rd
Look through earlier posts
