value of K

[Bidisha_800]

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

[cramya]

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

[cramya]

Whats the OA?

[naaga]

you are right cramya the OA is B

[cramya]

Thanks for the confirmation Naga. Appreciate it.