For which of the following values of $x$ is $\sqrt{1-\sqrt{2-\sqrt{x}}}$ NOT defined as a real number?

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Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Wed Apr 28, 2021 1:51 am

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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

Answer: E

Source: GMAT Prep

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