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06 Dec 2015, 12:02
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
93% (00:35) correct
7%
(01:20)
wrong
based on 182
sessions
History
Date
Time
Result
Not Attempted Yet
Which of the following is the value of \(\sqrt{\sqrt{0.0081}}\)?
A. 0.002025
B. 0.09
C. 0.18
D. 0.3
E. 0.39
A. 0.002025
B. 0.09
C. 0.18
D. 0.3
E. 0.39
06 Dec 2015, 12:32
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Bunuel
\(\sqrt{0.0081}\) = \(\sqrt{\frac{81}{1000}}\) = \(\frac{9}{100}\)
Furthrr \(\sqrt{\frac{9}{100}}\) = \(\frac{3}{10}\) = 0.3
Hence answer is D. 0.3
07 Dec 2015, 22:34
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Hi All,
This question can be solved by TESTing THE ANSWERS.
The prompt asks us to find the square root OF the square root of .0081. That question means that one of the answers, when squared and then squared AGAIN, will equal .0081.
Since .0081 has 4 decimal points, we're almost certainly looking for an answer that has just ONE decimal point (so squaring it will create 2 decimal points, then squaring THAT value will create 4 decimal points). The only answer that fits that pattern is D...
Answer D: .3
(.3)^2 = .09
(.09)^2 = .0081
That is an exact MATCH for what we were told so this MUST be the answer.
Final Answer:
GMAT assassins aren't born, they're made,
Rich
This question can be solved by TESTing THE ANSWERS.
The prompt asks us to find the square root OF the square root of .0081. That question means that one of the answers, when squared and then squared AGAIN, will equal .0081.
Since .0081 has 4 decimal points, we're almost certainly looking for an answer that has just ONE decimal point (so squaring it will create 2 decimal points, then squaring THAT value will create 4 decimal points). The only answer that fits that pattern is D...
Answer D: .3
(.3)^2 = .09
(.09)^2 = .0081
That is an exact MATCH for what we were told so this MUST be the answer.
Final Answer:
GMAT assassins aren't born, they're made,
Rich
