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GRE Math Challenge #41- If 3 < x < 8 & 5 < y < 11

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GRE Math Challenge #41- If 3 < x < 8 & 5 < y < 11 [#permalink] New post 19 Sep 2014, 03:27
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Question Stats:

100% (00:37) correct 0% (00:00) wrong based on 10 sessions
If 3 < x < 8 & 5 < y < 11, which of the following represents all the possible values of xy?

A. 3 < xy < 11
B. 8 < xy < 19
C. 15 < xy < 88
D. 24 < xy < 55
E. 33 < xy < 40
[Reveal] Spoiler: OA

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Re: GRE Math Challenge #41- If 3 < x < 8 & 5 < y < 11 [#permalink] New post 06 Jun 2018, 13:13
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sandy wrote:
If 3 < x < 8 & 5 < y < 11, which of the following represents all the possible values of xy?

A. 3 < xy < 11
B. 8 < xy < 19
C. 15 < xy < 88
D. 24 < xy < 55
E. 33 < xy < 40



For this kinda question we will always have 4 sets of value of xy.

1.At first multiply vertically: 15.......xy.......88
2. cross multiply: 33......xy.........88

Basing on these values you have to pick a choice that covers all these 4 values. Only option C works.
Thus the best answer is C.
Re: GRE Math Challenge #41- If 3 < x < 8 & 5 < y < 11   [#permalink] 06 Jun 2018, 13:13
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GRE Math Challenge #41- If 3 < x < 8 & 5 < y < 11

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