If n is a positive integer and k = 5.1 * 10^n, what is the value of k?
(1) 6000 < k < 500,000
(2) k^2 = 2.601 * 10^9
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I know statement (1) is sufficient to get the value that k = 51,000
But statement (2) should get 2 values (5.1 * 10^4) and (-5.1 * 10^4) as square of both these numbers will give 2.601 * 10^9.
Question tells about positivity of n but not k. Hence, I believe the answer should be just (A) for this DS question. But the officia guide suggests (D)...please advise?
(1) 6000 < k < 500,000
(2) k^2 = 2.601 * 10^9
-----------------------------
I know statement (1) is sufficient to get the value that k = 51,000
But statement (2) should get 2 values (5.1 * 10^4) and (-5.1 * 10^4) as square of both these numbers will give 2.601 * 10^9.
Question tells about positivity of n but not k. Hence, I believe the answer should be just (A) for this DS question. But the officia guide suggests (D)...please advise?
