Remainder problem

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Mr.Hollywood: Senior | Next Rank: 100 Posts; Posts: 34; Joined: Mon Oct 24, 2011 2:04 pm; Thanked: 1 times

by Mr.Hollywood » Fri Mar 09, 2012 4:36 pm

N is divisible by 5, what is the remainder of N when divided by 6?

1) when N is divided by 4, remainder is 3
2) when 3N is divided by 12, remainder is 3

I think it's E, anybody seeing any other possibilities?

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Source: Beat The GMAT — Data Sufficiency | Fri Mar 09, 2012 4:36 pm

killer1387: Legendary Member; Posts: 581; Joined: Sun Apr 03, 2011 7:53 amFollowed by: 5 members; Thanked: 52 times

by killer1387 » Fri Mar 09, 2012 8:37 pm

Mr.Hollywood wrote:N is divisible by 5, what is the remainder of N when divided by 6?

1) when N is divided by 4, remainder is 3
2) when 3N is divided by 12, remainder is 3

I think it's E, anybody seeing any other possibilities?

1) N= 15, 35, 55, 75, 95,.......
R(BY 6)=3,5,1.....
INSUFFICIENT

2) N=5, 25, 45, 65
R(BY 6)= 5, 1, 3....
INSUFFICIENT

BY 1 +2
INSUFFICIENT

HENCE E

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