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Which of the following sets contains only factors of 45?

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by swerve » Mon Jun 03, 2019 12:11 pm

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Answers

A

B

C

D

E

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Difficulty—

Which of the following sets contains only factors of 45?

A. {1, 3, 5, 7}
B. {1, 5, 7, 13}
C. {1, 3, 5, 13, 15}
D. {3, 5, 9, 15}
E. {3, 5, 7, 45}

The OA is D

Source: Princeton Review
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by Brent@GMATPrepNow » Mon Jun 03, 2019 12:18 pm
swerve wrote:Which of the following sets contains only factors of 45?

A. {1, 3, 5, 7}
B. {1, 5, 7, 13}
C. {1, 3, 5, 13, 15}
D. {3, 5, 9, 15}
E. {3, 5, 7, 45}

The OA is D

Source: Princeton Review
Scan the answer choices....(C and D).....
13 is NOT a factor of 45.
ELIMINATE C

By the process of elimination, the correct answer is D

Cheers,
Brent

Scan the two remaining answer choices....
7 is NOT a factor of 45.
ELIMINATE A, B and E
Brent Hanneson - Creator of GMATPrepNow.com
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by Scott@TargetTestPrep » Thu Jun 06, 2019 4:38 pm
swerve wrote:Which of the following sets contains only factors of 45?

A. {1, 3, 5, 7}
B. {1, 5, 7, 13}
C. {1, 3, 5, 13, 15}
D. {3, 5, 9, 15}
E. {3, 5, 7, 45}

The OA is D

Source: Princeton Review
Since 45 does not contain 7 or 13 as a factor, of the answer choices, only D can be correct.

Answer: D

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