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27 Dec 2009, 15:02
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B
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Difficulty:
15%
(low)
Question Stats:
72% (00:53) correct
28%
(01:06)
wrong
based on 347
sessions
History
Date
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Not Attempted Yet
27 Dec 2009, 18:11
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What is the value of the integer k?
(1) \(k+3>0\) --> \(k>-3\), not sufficient to determine single numerical value of \(k\). Not sufficient.
(2) \(k^4\leq{0}\), as a number in even power is never negative \(k^4\) cannot be less than zero, thus \(k^4=0\) --> \(k=0\). Sufficient.
Answer: B.
(1) \(k+3>0\) --> \(k>-3\), not sufficient to determine single numerical value of \(k\). Not sufficient.
(2) \(k^4\leq{0}\), as a number in even power is never negative \(k^4\) cannot be less than zero, thus \(k^4=0\) --> \(k=0\). Sufficient.
Answer: B.
General Discussion
28 Dec 2009, 10:19
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The answer is B
1st statement non sufficient, from this statement we just know k < -3
2nd statement sufficient because from this statement, k must be 0 to have an integer k which k^4< or = 0
Therefore the answer is B
1st statement non sufficient, from this statement we just know k < -3
2nd statement sufficient because from this statement, k must be 0 to have an integer k which k^4< or = 0
Therefore the answer is B
