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22 Dec 2018, 20:13
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A
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Difficulty:
35%
(medium)
Question Stats:
59% (00:41) correct
41%
(00:44)
wrong
based on 61
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Is the number x a multiple of 12?
1) Both 3 and 4 divide into x evenly.
2) Both 2 and 6 divide into x evenly.
1) Both 3 and 4 divide into x evenly.
2) Both 2 and 6 divide into x evenly.
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22 Dec 2018, 21:46
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1. 3 and 4 are co primes to each other. Hence, x must be a multiple of 12. SUFFICIENT.
2. 2 and 6 are not co prime. For example, take 18. It is divisible by 2 as well as 6. So, INSUFFICIENT.
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2. 2 and 6 are not co prime. For example, take 18. It is divisible by 2 as well as 6. So, INSUFFICIENT.
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23 Dec 2018, 01:21
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MSFApplicant
If the number x is a multiple of 12, the number will be of form \(2^2 * 3 * x\)
1. Both \(3\) and \(4(2^2)\) divide the number evenly.
Now, the number has to be a multiple of 12 because at the
bare minimum the number will have \(2^2*3\) or \(12\) (Sufficient)
2. Both \(2\) and \(6(2*3)\) divide into x evenly.
If the number is 24, then it will be a multiple of 12. But, 18 which
is evenly divided by 2 and 6 is not a multiple of 12 (Insufficient)(Option B)
