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09 May 2018, 00:26
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
61% (01:50) correct
39%
(01:58)
wrong
based on 147
sessions
History
Date
Time
Result
Not Attempted Yet
Is positive integer x a prime number?
(1) \(x^2+x \leq 10\)
(2) x does not have odd number of factors
Source: https://www.GMATinsight.com
(1) \(x^2+x \leq 10\)
(2) x does not have odd number of factors
Source: https://www.GMATinsight.com
09 May 2018, 02:55
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from (1) x2+x≤10x2+x≤10
we can get that x equals to 1 or 2
(2) x does not have odd number of factors
insufficient
combine both (1) and (2), hence the anwer is D
we can get that x equals to 1 or 2
(2) x does not have odd number of factors
insufficient
combine both (1) and (2), hence the anwer is D
09 May 2018, 05:20
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superbenson
Hello
Your analysis of statements is correct. But when none of the two statements is sufficient on its own and together they are sufficient, then the answer to be marked is C, not D
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