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LCM Question

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LCM Question [#permalink]

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New post 01 May 2011, 03:58
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A
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Hi

Please help me understand this LCM Q. I thought the answer must be 1,2 but there was no such option. So i had to pick 1,2,3. The Answer B is the correct one and explanation is attached. I am not satisfied with the explanation as 4 (2,2) and 6 (2,3) can also form 24.

Someone please help clarify.

Thanks!
[Reveal] Spoiler: OA

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Re: LCM Question [#permalink]

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New post 01 May 2011, 04:30
The number has both 4 (2*2) & 6 (2*3) as factors.
The smallest such number has to be 2*2*3
Also note that any number which is a multiple of 2*2*3, will always be divisible by both 4 & 6 as well. Hence the smallest such number is 2*2*3 = 12

The answer is therefore B.

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Re: LCM Question [#permalink]

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New post 01 May 2011, 10:36
LCM of 6 and 4 is 12.
Hence B.
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Re: LCM Question   [#permalink] 01 May 2011, 10:36
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