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Is xy greater than 1, if x and y are both positive

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Intern
Joined: 22 Oct 2012
Posts: 7

Kudos [?]: 26 [1], given: 1

Is xy greater than 1, if x and y are both positive [#permalink]

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23 Nov 2012, 08:41
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25% (medium)

Question Stats:

78% (00:41) correct 22% (00:40) wrong based on 41 sessions

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Is xy greater than 1, if x and y are both positive.

(1) x is less than 1
(2) y is greater than 1
[Reveal] Spoiler: OA

Kudos [?]: 26 [1], given: 1

Math Expert
Joined: 02 Sep 2009
Posts: 42249

Kudos [?]: 132643 [0], given: 12326

Re: Is xy greater than 1, if x and y are both positive [#permalink]

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23 Nov 2012, 08:50
Is xy greater than 1, if x and y are both positive.

Given that x>0 and y>0. The question asks whether xy>1.

(1) x is less than 1. If x=1/4 and y=100, then the answer is YES but if x=1/4 and y=2, then the answer is NO. Not sufficient.

(2) y is greater than 1. The same here: if x=1/4 and y=100, then the answer is YES but if x=1/4 and y=2, then the answer is NO. Not sufficient.

(1)+(2) Consider the same example. Not sufficient.

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Kudos [?]: 132643 [0], given: 12326

Senior Manager
Joined: 06 Aug 2011
Posts: 388

Kudos [?]: 238 [0], given: 82

Re: Is xy greater than 1, if x and y are both positive [#permalink]

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24 Nov 2012, 08:09
Its E..

X and y can be any number.

y can be 1.00003 ..or it can be 1000..

x is les than 1 ..so if its multiplied by 1.00003 (which is greater than 1) it wil be less than 1..but if y is 1000 it wil greater than 1..

not sufficient.

E..
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Bole So Nehal.. Sat Siri Akal.. Waheguru ji help me to get 700+ score !

Kudos [?]: 238 [0], given: 82

Re: Is xy greater than 1, if x and y are both positive   [#permalink] 24 Nov 2012, 08:09
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