gmat set

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Source: — Data Sufficiency |

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by saurabhmahajan » Sat Sep 25, 2010 2:32 am
dont understand how can OA be D (i might be wrong... so plz help me understand the OA)

stmt 1:
x= 3n + 2 ,n is a positive integer
for remainder to be 0 when [(3^x+1)/10], 3^x should result in number which has unit as 9.
and for 3^x=9..729..59049 x should be equal to 2,6,10,14,....etc
from 3n+2 we can get x=14 if n=4....but not when n=1,2... so insufficient

stmt 2:
x>4
as said in stmt 1 x needs to be 2,6,10...etc which can be true from stmt 2 but not convincingly becoz x can be 7,8,9....etc or can be 10,14,...etc
so insufficient

So IMO:E
Thanks and regards,
Saurabh Mahajan

I can understand you not winning,but i will not forgive you for not trying.

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by clammiestqasar » Sat Sep 25, 2010 7:47 pm
Yea,even my ans was E

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by hi.itz.mani » Mon Sep 27, 2010 2:52 am
IMO E