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Kaplan: C^d?

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Source: — Data Sufficiency |
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by killer1387 » Tue Mar 27, 2012 8:37 pm
from the given expression, d=2
1) c=4 sufficient
2) c=4 sufficient

D
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by sanju09 » Wed Mar 28, 2012 3:18 am
shubhamkumar wrote:Not sure if this question has been posted, but would like to share this question from Kaplan Cat#1.
See image.
OA D
Given is c^d = c ^(8 - 3 d), or 4 d = 8 or d = 2. Hence c^d = c^2 =?

I. Since c = 4, therefore c^2 = 16. Sufficient

II. Since d = √c, or 2 = √c, therefore c = 4, and c^2 = 16. [spoiler]Sufficient

Take D[/spoiler]
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