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If each of the three nonzero numbers a, b, and c is divisibl
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Updated on: 30 May 2018, 15:56
Updated on: 30 May 2018, 15:56
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Question Stats:
71% (00:58) correct
28% (00:38) wrong based on 14 sessions
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If each of the three nonzero numbers a, b, and c is divisible by 3, then abc must be divisible by which one of the following the numbers?
(A) 8
(B) 27
(C) 81
(D) 121
(E) 159
(A) 8
(B) 27
(C) 81
(D) 121
(E) 159
Re: If each of the three nonzero numbers a, b, and c is divisibl
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31 May 2018, 11:19
31 May 2018, 11:19
Expert Reply
Three numbers are divisible by 3. Rewiting them:
\(a= 3m\)
\(b=3n\)
\(c=3o\)
\(abc= 3m \times 3n \times 30 =27mno\).
So the number \(a\times b\times c\) is divisible by 27.
\(a= 3m\)
\(b=3n\)
\(c=3o\)
\(abc= 3m \times 3n \times 30 =27mno\).
So the number \(a\times b\times c\) is divisible by 27.
gmatclubot
Re: If each of the three nonzero numbers a, b, and c is divisibl [#permalink]
31 May 2018, 11:19
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