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Set X consists of different positive numbers arranged in ascending ord [#permalink]

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17 Nov 2011, 16:41

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00:00

A

B

C

D

E

Difficulty:

55% (hard)

Question Stats:

59% (01:58) correct
41% (02:15) wrong based on 186 sessions

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Set X consists of different positive numbers arranged in ascending order: K, L, M, 5, 7. If K, L and M are consecutive integers, what is the arithmetic mean of set X?

(1) The product K × L × M is a multiple of 6 (2) There are at least 2 prime numbers among K, L and M

Re: Set X consists of different positive numbers arranged in ascending ord [#permalink]

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17 Nov 2011, 23:25

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Enigma, I am inclined to agree with you on choice E. Here is my logic:

Statement 1 says - KxLxM is a multiple of 6. This could be either 1,2,3 which equals 6 (6 is a multiple of itself) or 2,3,4 (which equals 12 also a multiple of 6) - so insuff. Statement 2 says - There are at least 2 prime numbers among K,L, and M - this since K,L,M has to be 1-4 and consecutive this gives us no new information - so insuff.

Re: Set X consists of different positive numbers arranged in ascending ord [#permalink]

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31 Aug 2014, 22:58

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