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Which of the following pairs of integers have reciprocals w

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Which of the following pairs of integers have reciprocals w [#permalink] New post 07 Dec 2017, 03:26
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Which of the following pairs of integers have reciprocals whose sum is either less than \frac{1}{3} or greater than \frac{1}{2}?

Indicate all such pairs.

A. 1 and 14

B. 3 and 12

C. 5 and 10

D. 7 and 8

E. 6 and 8

[Reveal] Spoiler: OA
A,C,D

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Re: Which of the following pairs of integers have reciprocals w [#permalink] New post 07 Dec 2017, 11:27
Carcass wrote:
Which of the following pairs of integers have reciprocals whose sum is either less than \frac{1}{3} or greater than \frac{1}{2}?

Indicate all such pairs.

A. 1 and 14

B. 3 and 12

C. 5 and 10

D. 7 and 8

E. 6 and 8

[Reveal] Spoiler: OA
OA in 24h


Here only option b and E donot match the criteria

3 and 12 donot match the criteria because the reciprocal add up to 0.4166 which in not greater than \frac{1}{2}
and 6 and 8 donot match the criteria because the reciprocal add up to 0.291 which in not greater than \frac{1}{2} or less than \frac{1}{3}
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Re: Which of the following pairs of integers have reciprocals w [#permalink] New post 08 Dec 2017, 04:05
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OAs added. A,C,D
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Re: Which of the following pairs of integers have reciprocals w [#permalink] New post 09 Dec 2017, 13:43
0.291 is less than 1/3
Re: Which of the following pairs of integers have reciprocals w   [#permalink] 09 Dec 2017, 13:43
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Which of the following pairs of integers have reciprocals w

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