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value of K

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value of K

by Bidisha_800 » Mon Feb 16, 2009 3:31 pm
I got this question wrong under time pressure .... hope u would be able to solve in 1 min

If K is a positive integer less than 10 and N = 4,321 + K, what is the value of K?
(1) N is divisible by 3.
(2) N is divisible by 7
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by cramya » Mon Feb 16, 2009 3:49 pm
I am not sure on what the 1 min restriction means.

Stmt I

N is divisible by 3

4321 not divisible by 3 since the sum of the digits is 10

+2,+5 makes N divisible by 3 leading to 2 different k's
INSUFF

Stmt II

4321 not divisible by 7 gives a remainder 2

We need k to be 5 for N to be divisible by 7. The next number would be 7 more which would make it 2 + 5+7 not possible

K is 5

SUFF

Choose B
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by cramya » Mon Feb 16, 2009 3:50 pm
Whats the OA?
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by naaga » Mon Feb 16, 2009 7:48 pm
you are right cramya the OA is B
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by cramya » Mon Feb 16, 2009 7:51 pm
Thanks for the confirmation Naga. Appreciate it.
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