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Is the integer k divisible by 4?

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Source: — Data Sufficiency |
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by GMATQuantCoach » Sun Jun 28, 2009 10:42 pm
1)Let k = 2

2)9 * k is divisible by 12 implies 9*k is divisible by 4 and 3. That means the factor 4 must come from 9 or k or parts of them combined (2 * 2). In this case the factor 4 must be from k. Then k is divisible by 4
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by alexdallas » Mon Jun 29, 2009 5:18 pm
tks
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