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# What is the value of x^5? (1) x^2= 426 (2) x^9< 23

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SVP
Joined: 16 Oct 2003
Posts: 1798

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What is the value of x^5? (1) x^2= 426 (2) x^9< 23 [#permalink]

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11 Sep 2004, 10:00
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

What is the value of x^5?
(1) x^2= 426
(2) x^9< 23

Kudos [?]: 173 [0], given: 0

GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4284

Kudos [?]: 537 [0], given: 0

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11 Sep 2004, 10:13
C it is although I did not bother calculate this. The values I got were approximations.
1) -21<x<-20 or 20<x<21
2) x<2
We know from both combined that x must be some negative real number b/w -21 and -20
_________________

Best Regards,

Paul

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Director
Joined: 16 Jun 2004
Posts: 891

Kudos [?]: 68 [0], given: 0

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11 Sep 2004, 11:59
Yes C
1. We know x= +-20.63 so insufficient.
2. X<2. So Insufficient

Combining we know X = -20.63 and hence can find X^5.

Kudos [?]: 68 [0], given: 0

11 Sep 2004, 11:59
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# What is the value of x^5? (1) x^2= 426 (2) x^9< 23

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