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12 Nov 2017, 23:40
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35%
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65% (01:20) correct
35%
(01:38)
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When 15n, where n is a positive integer, is divided by 6, the remainder is x. What is the value of x?
(1) When n is divided by 2, the remainder is 0.
(2) When n is divided by 3, the remainder is 0.
(1) When n is divided by 2, the remainder is 0.
(2) When n is divided by 3, the remainder is 0.
12 Nov 2017, 23:51
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A
From st1 we can know that n is a positive even number.
ie2,4,6,8...
So 15n/6 will always give the remainder 0. Sufficient
From st2 n is a multiple of 3. For odd multiples of 3 the remainder of 15n/6 is 3. But for even multiple of 3 it’s 0. Two values. So insufficient
Sent from my iPhone using GMAT Club Forum
From st1 we can know that n is a positive even number.
ie2,4,6,8...
So 15n/6 will always give the remainder 0. Sufficient
From st2 n is a multiple of 3. For odd multiples of 3 the remainder of 15n/6 is 3. But for even multiple of 3 it’s 0. Two values. So insufficient
Sent from my iPhone using GMAT Club Forum
13 Nov 2017, 00:44
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Since 15n=3*5*n and has 3 as a factor, we just need to figure out whether n is a multiple of 2 or not
(1) Sufficient, now we know that n is divisible by 2, so the remainder when 15n is divided by 6 is zero
(2) This information gives us no new inferences, because 15n has 3 as a factor itself
Answer A.
(1) Sufficient, now we know that n is divisible by 2, so the remainder when 15n is divided by 6 is zero
(2) This information gives us no new inferences, because 15n has 3 as a factor itself
Answer A.
