BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

27-5

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Junior | Next Rank: 30 Posts
Posts: 24
Joined: Wed Aug 22, 2007 4:49 pm
Thanked: 3 times

Re: 27-5

by jaspreet.sharma » Wed Sep 05, 2007 3:53 pm
magical cook wrote:Hi, Can anyone help? thanks!
Answer should be A

1 implies x=4n+2
for n=0
x=2

3^x+1 =10.....remainder is 0 when divided by 10

for n=1
x=6

3^x+1= 729+1=730 ....again.........remainder is 0 when divided by 10


2nd stmt implies x>4....is not sufficient.....as if x=5
then
3^x+1=244 and remainder is not 0 when divided by 10

but for x=6.....remainder is 0 when divided by 10

So, just A is sufficient.....

Correct me if am wrong
Top
Master | Next Rank: 500 Posts
Posts: 484
Joined: Sun Jul 30, 2006 7:01 pm
Thanked: 2 times
Followed by:1 members

by magical cook » Thu Sep 06, 2007 9:32 am
you're correct - thanks!
Top
Post new topic Post Reply
• Page 1 of 1