If k is a positive integer, what is the value of k? (1) k^2

Question

If k is a positive integer, what is the value of k?

(1) k^2 <10
(2) k^5 > 30

NiharikaR · Answer

IMO C

St1 k=1,3
insufficient
St2 k=2,3......
insufficient

combining k=3
sufficient

KS15 · Answer

k can be either 2 or 3. So Answer is E.

pedromota · Answer

Would be:
(1) 
K={1,2,3} 
K^2={1,4,9}<10

(2)
K={2,3}

So even if you use both of them you can't conclude the value of K, could be either 2 or 3.

push12345 · Answer

I) gives value of K as 1,2 and 3
Insufficient

II)gives value as 2,3

Combining give values as 2 and 3 
Multiple values so no definite answer so E is aNswer

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If k is a positive integer, what is the value of k? (1) k^2 <10 (2) k