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What is the value of approximated to the nearest integer? 13

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sandy
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What is the value of approximated to the nearest integer? 13 [#permalink] New post   29 Apr 2018, 00:16
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What is the value of \(2 \times \sqrt[5]{34}\) approximated to the nearest integer?

A. 13
B. 8
C. 5
D. 4
E. 3
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D
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mohan514
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Re: What is the value of approximated to the nearest integer? 13 [#permalink] New post   04 May 2018, 04:23
Question is not complete. Please check.
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sandy
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Re: What is the value of approximated to the nearest integer? 13 [#permalink] New post   04 May 2018, 09:44
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mohan514 wrote:
Question is not complete. Please check.

Fixed thanks
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Re: What is the value of approximated to the nearest integer? 13 [#permalink] New post   04 May 2018, 10:28
sandy wrote:
What is the value of \(2 \times \sqrt[5]{34}\) approximated to the nearest integer?

A. 13
B. 8
C. 5
D. 4
E. 3


\(\sqrt[5]{32} = 2\)

\(\sqrt[5]{243} = 3\)


Since 34 is wayyyyyyyy closer to 32 than it is to 243, we can conclude that \(\sqrt[5]{34}\) is just a teeny bit bigger than 2

So, \(2 \times \sqrt[5]{34} =\)(2)(a number a teeny bit bigger than 2)
= a number a teeny bit bigger than 4

Answer: D

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Re: What is the value of approximated to the nearest integer? 13 [#permalink] New post   05 May 2018, 12:26
Are we able to use the calculator for this kind of question? Does test calculator have options of squaring and square rooting any numbers?
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Re: What is the value of approximated to the nearest integer? 13 [#permalink] New post   05 May 2018, 14:51
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kruttikaaggarwal wrote:
Are we able to use the calculator for this kind of question? Does test calculator have options of squaring and square rooting any numbers?


The onscreen calculator has a square root key, but not a 5th root key.

Here's our video on the GRE's onscreen calculator:
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Re: What is the value of approximated to the nearest integer? 13 [#permalink] New post   05 Jul 2022, 09:17
GreenlightTestPrep, can you please explain what may be a good approach to use to mitigate the risk of overestimation? How to avoid selecting 5 instead of 4?
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Re: What is the value of approximated to the nearest integer? 13 [#permalink] New post   05 Jul 2022, 14:26
tkorzhan18 wrote:
GreenlightTestPrep, can you please explain what may be a good approach to use to mitigate the risk of overestimation? How to avoid selecting 5 instead of 4?


Good question!!
Keep in mind that this was not an official GRE question.
I suspect that, if this were an official question, they wouldn't have 5 as an answer choice (does that requires us to be a lot more precise).
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