is the positiv integer n a multiple of 24 1. n is a multiple

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is the positiv integer n a multiple of 24 1. n is a multiple [#permalink]

30 Nov 2010, 10:56

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is the positiv integer n a multiple of 24
1. n is a multiple of 4
2. n is a multiple of 6

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Re: properties of numbers [#permalink]

30 Nov 2010, 11:01

whichscore wrote:

is the positiv integer n a multiple of 24
1. n is a multiple of 4
2. n is a multiple of 6

Probably the best way to solve this problem is to test different numbers.

(1) n is a multiple of 4 --> if n=4 then the answer is NO but if n=24 then the answer is YES. Not sufficient.
(2) n is a multiple of 6 --> if n=6 then the answer is NO but if n=24 then the answer is YES. Not sufficient.

(1)+(2) Well, n is obviously a multiple of LCM of 4 and 6, so n is a multiple of 12. Now, again if n=12 then the answer is NO but if n=24 then the answer is YES. Not sufficient.

Answer: E.
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Manager

Joined: 24 Jul 2010

Posts: 91

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Kudos [?]: 3 [0], given: 12

Re: properties of numbers [#permalink]

30 Nov 2010, 11:17

thx bunnel for the explanation !

Re: properties of numbers [#permalink] 30 Nov 2010, 11:17

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is the positiv integer n a multiple of 24 1. n is a multiple

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is the positiv integer n a multiple of 24 1. n is a multiple

is the positiv integer n a multiple of 24 1. n is a multiple

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