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If a is a positive divisor of both 30 and 42, then a is also a positiv
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30 Jun 2021, 06:27
30 Jun 2021, 06:27
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66% (01:19) correct
33% (01:17) wrong based on 12 sessions
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If a is a positive divisor of both 30 and 42, then a is also a positive divisor of which integer?
Indicate all such integers.
(A) —41
(B) —12
(C) 12
(D) 37
(E) 102
Indicate all such integers.
(A) —41
(B) —12
(C) 12
(D) 37
(E) 102
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Re: If a is a positive divisor of both 30 and 42, then a is also a positiv
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30 Jun 2021, 06:33
30 Jun 2021, 06:33
2
Carcass wrote:
If a is a positive divisor of both 30 and 42, then a is also a positive divisor of which integer?
Indicate all such integers.
(A) —41
(B) —12
(C) 12
(D) 37
(E) 102
Indicate all such integers.
(A) —41
(B) —12
(C) 12
(D) 37
(E) 102
30 = (2)(3)(5)
42 = (2)(3)(7)
\(a\) could be 2, 3, or 6
For \(a\) to be a divisor - the option choices must have 6 as a factor!
A. -41
B. -12 = -(2)(2)(3)
C. 12 = (2)(2)(3)
D. 37
E. 102 = (2)(3)(17)
Hence, option B, C, and E
gmatclubot
Re: If a is a positive divisor of both 30 and 42, then a is also a positiv [#permalink]
30 Jun 2021, 06:33
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