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

Question

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

nkin · Answer

x > 0 so, x = + sqrt(161)

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

Option A

dave13 · Answer

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

HKD1710 · Answer

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

bumpbot · Answer

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).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

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

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Problem Solving (PS) Questions