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Given that 0 ≤ x ≤ 3, and y < 8, which of the following

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krishnakumar.gopinathan
 Post subject: Given that 0 ≤ x ≤ 3, and y < 8, which of the following
 Post Posted: Thu Sep 30, 2010 2:18 am 
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Students


Posts: 3
Hi,

This problem is from MGMAT study guide 3 (4th edition) pg 90.

Given that 0 ≤ x ≤ 3, and y < 8, which of the following could not be the value of xy?

(A) 0
(B) 8
(C) 12
(D) 16
(E) 24

The answer given is (E) given the logic of multiplying the highest possible value for x which is 3 with highest possible value for y which is less than 8. this gives a value less than 24.

I do not understand how 16 can be got as the only possible value for x is 2 but y cannot be 8 ?

Thanks in advance
krishna kumar
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rishi_1008
 Post subject: Re: Given that 0 ≤ x ≤ 3, and y < 8, which of the following
 Post Posted: Thu Sep 30, 2010 2:47 am 
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Students


Posts: 2
The question does not state that x and y have to be integer.
therefore xy can take any value between 0 & 24. 24 excluded.
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tim
 Post subject: Re: Given that 0 ≤ x ≤ 3, and y < 8, which of the following
 Post Posted: Thu Oct 07, 2010 8:38 pm 
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ManhattanGMAT Staff


Posts: 2242
Location: Southwest Airlines, seat 21C
thanks, Rishi..

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Tim Sanders
Manhattan GMAT Instructor
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