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# Data sufficiency problem -

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Intern
Joined: 03 Jun 2017
Posts: 2

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05 Nov 2017, 02:57
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 3 sessions

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The question is in math revolution post -

Is (r^2)x>0?
1) r^5=1
2) x>0

ANS: There are two variables (r and x) in the original condition. In order to match the number of variables and the number of equations, we need 2 equations. Hence, the correct answer is C.

However, if we are given in question that product of (r raise to 2) * r, can we assume that (r raise to 2)the number will be positive. So we require only the symbol of x?

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

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 Math Revolution Discount Codes e-GMAT Discount Codes Magoosh Discount Codes
Math Expert
Joined: 02 Sep 2009
Posts: 47977
Re: Data sufficiency problem -  [#permalink]

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07 Nov 2017, 21:26
The question is in math revolution post -

Is (r^2)x>0?
1) r^5=1
2) x>0

ANS: There are two variables (r and x) in the original condition. In order to match the number of variables and the number of equations, we need 2 equations. Hence, the correct answer is C.

However, if we are given in question that product of (r raise to 2) * r, can we assume that (r raise to 2)the number will be positive. So we require only the symbol of x?

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: Data sufficiency problem - &nbs [#permalink] 07 Nov 2017, 21:26
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