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# What is the value of ? 4 16 32

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GRE Prep Club Legend
Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
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Kudos [?]: 1783 [0], given: 397

What is the value of ? 4 16 32 [#permalink]  29 Apr 2018, 00:06
Expert's post
00:00

Question Stats:

88% (00:17) correct 11% (00:00) wrong based on 18 sessions
What is the value of $$\sqrt{\sqrt{64}}$$?

A. $$2\sqrt{2}$$
B. 4
C. $$4\sqrt{2}$$
D. 16
E. 32
[Reveal] Spoiler: OA

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Sandy
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GRE Instructor
Joined: 10 Apr 2015
Posts: 1546
Followers: 56

Kudos [?]: 1468 [0], given: 8

Re: What is the value of ? 4 16 32 [#permalink]  02 May 2018, 05:47
Expert's post
sandy wrote:
What is the value of $$\sqrt{\sqrt{64}}$$?

A. $$2\sqrt{2}$$
B. 4
C. $$4\sqrt{2}$$
D. 16
E. 32

√64 = 8, so $$\sqrt{\sqrt{64}}$$ = √8

From here, we get...
√8 = √[(4)(2)]
= (√4)(√2)
= 2√2

Cheers.
Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com

Re: What is the value of ? 4 16 32   [#permalink] 02 May 2018, 05:47
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