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Math Expert
Joined: 02 Sep 2009
Posts: 47110

Is the product xy > 27? [#permalink]
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24 Jan 2016, 05:34
Question Stats:
59% (00:44) correct 41% (00:45) wrong based on 58 sessions
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Intern
Joined: 17 Jan 2016
Posts: 3

Re: Is the product xy > 27? [#permalink]
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24 Jan 2016, 20:51
The Answer should be E.
Neither clue is enough on its own. Simple counter example to use would be 0.0001 and 100 as the other variable Even with both statements combined, we can still find conflicting examples, such as x= 3, y = 5, xy < 27 x= 4.9, y = 5.9 , xy = 27.84 > 27
Hence still insufficient



Senior Manager
Joined: 02 Jul 2017
Posts: 294

Re: Is the product xy > 27? [#permalink]
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07 Sep 2017, 01:00
Is the product xy > 27?
(1) 2 < x < 5 Clearly insufficient as we don't know y (2) 6 > y Clearly insufficient as we don't know x
1+2
max of x and y in integer form x=4 y=5 xy=20 <27 Here we can make mistake if we consider both x and y integers. Nowhere its mentioned that x and y are integers.
So max of x and y approx we can check for y=5.9 and x=4.9 xy=5.9*4.9 = 28.91 >27
Getting different answer in 2 cases
So not sufficient
Answer: E




Re: Is the product xy > 27?
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07 Sep 2017, 01:00






