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gmat prep - II

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gmat prep - II

by vinod192 » Sat Sep 10, 2011 11:48 pm
For which of the following values of x is sqrt(1-sqrt(2-sqrt(x))) NOT defined as a real
number?
a. 1
b. 2
c. 3
d. 4
e. 5

OA E

solution ASAP
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by bijoyajj » Sun Sep 11, 2011 12:21 am
for option e , value becomes imaginary (-ve) as[2-( root of (5))] makes it -ve..
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