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# For which of the following nvalues of 'x' is

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Moderator
Joined: 07 Jan 2018
Posts: 697
Followers: 11

Kudos [?]: 785 [1] , given: 88

For which of the following nvalues of 'x' is [#permalink]  29 May 2018, 17:37
1
KUDOS
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Question Stats:

66% (00:44) correct 33% (00:10) wrong based on 6 sessions
For which of the following values of 'x' is √(1-√(2-√x) ) not defined as real number?

A. 1
B. 2
C. 3
D. 4
E. 5

src: Orbit Test Prep
[Reveal] Spoiler: OA
Intern
Joined: 25 May 2018
Posts: 7
Followers: 0

Kudos [?]: 2 [0], given: 1

Re: For which of the following nvalues of 'x' is [#permalink]  28 Jun 2018, 21:24
amorphous wrote:
For which of the following values of 'x' is √(1-√(2-√x) ) not defined as real number?

A. 1
B. 2
C. 3
D. 4
E. 5

src: Orbit Test Prep

Hi,

Concept tested: Square root of a negative number is not a real number.

Given expression is:
$$\sqrt{(1 - \sqrt{(2 - \sqrt{x})})}$$

$$2 - \sqrt{x}$$ is negative for x = 5. Hence, answer (E).

Thanks.
Re: For which of the following nvalues of 'x' is   [#permalink] 28 Jun 2018, 21:24
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