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22 Jun 2017, 04:57
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
76% (00:53) correct
24%
(01:10)
wrong
based on 94
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Luckisnoexcuse
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Joined: 18 Aug 2016
Last visit: 16 Apr 2022
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Concentration: Strategy, Technology
Schools: Kenan-Flagler '20 (M)
GMAT 1: 630 Q47 V29
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22 Jun 2017, 05:02
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Bunuel
If a ≠ 0, is a^b > 1?
(1) b = 0
(2) a < 1
(1) b = 0
(2) a < 1
(1) Gives clear answer that any number to the power 0 is 1 hence sufficient.
(2) If a <1 .
Assume A to be (1/2) and b to be 2 then on solving it gives 1/4
However If A is 1/2 and b is -2 then on solving it gives 4
Contradictory answers hence not sufficient
Hence A
Please correct me if i am wrong
22 Jun 2017, 05:03
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Bunuel
If a ≠ 0, is a^b > 1?
(1) b = 0
(2) a < 1
(1) b = 0
(2) a < 1
1. b = 0
So, a^b = a^0 = 1 is not > 1.. So SUFFICIENT
2. a< 1
For 0<a<1 , a^b <1
1<a<inf. , a^b >1..
NOT SUFFICIENT.
Correct option A.
