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If x > 0 and x^2 = 161, what is the best whole number approximation of

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HKD1710
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If x > 0 and x^2 = 161, what is the best whole number approximation of [#permalink] New post   24 Nov 2018, 08:49
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96% (00:36) correct 4% (00:44) wrong based on 586 sessions
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If \(x > 0\) and \(x^2 = 161\), what is the best whole number approximation of \(x\)?

(A) 13
(B) 18
(C) 41
(D) 80
(E) 2,560

Project PS Butler : Question #38


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Re: If x > 0 and x^2 = 161, what is the best whole number approximation of [#permalink] New post   24 Nov 2018, 09:03
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x > 0 so, x = + sqrt(161)

We know that 12^2 = 144 and 13^2 = 169, hence, best approximation is 13

Option A
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Re: If x > 0 and x^2 = 161, what is the best whole number approximation of [#permalink] New post   24 Nov 2018, 09:31
HKD1710 wrote:
If \(x > 0\) and \(x^2 = 161\), what is the best whole number approximation of \(x\)?

(A) 13
(B) 18
(C) 41
(D) 80
(E) 2,560

Project PS Butler : Question #38


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HKD1710 what if you dont indicate difficulty level in butler questions and reveal the difficulty of question when OA is published :) I think it will be more interesting :grin:
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Re: If x > 0 and x^2 = 161, what is the best whole number approximation of [#permalink] New post   24 Nov 2018, 10:38
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Hi dave13,

First of all Difficulty is calculated automatically on the basis of results of a number of attempts on a particular question. You can see it in the timer statics (only after a certain number of attempts has been made).

Now, To post a question, one of the difficulty level must be tagged.

Simple solution for you - Just click on "Hide Tags" on any question opened in the browser. So next time when you click on question URL from the butler project page or anywhere, you will not see the tags. When you need to see tags just click on "Show Tags".

Hope it helps :)
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Re: If x > 0 and x^2 = 161, what is the best whole number approximation of [#permalink] New post   13 Dec 2023, 10:28
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: If x > 0 and x^2 = 161, what is the best whole number approximation of [#permalink]
13 Dec 2023, 10:28
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