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# Is the product xy > 27?

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Math Expert
Joined: 02 Sep 2009
Posts: 54440
Is the product xy > 27?  [#permalink]

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24 Jan 2016, 05:34
00:00

Difficulty:

45% (medium)

Question Stats:

61% (00:59) correct 39% (01:03) wrong based on 60 sessions

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Is the product xy > 27?

(1) 2 < x < 5
(2) 6 > y

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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

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
Current Student
Joined: 02 Jul 2017
Posts: 294
Concentration: Entrepreneurship, Technology
GMAT 1: 730 Q50 V38
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

Re: Is the product xy > 27?   [#permalink] 07 Sep 2017, 01:00
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