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Re: Of the following, which is most nearly equal to √10? [#permalink]
24 Mar 2013, 04:03
Now take the square of 3.1i.e, 3.1X3.1= 9.64 Now the next number has to be closer to 10 You can check by taking the square of 3.3 and then zero down on 3.2!
I've failed over and over and over again in my life and that is why I succeed--Michael Jordan Kudos drives a person to better himself every single time. So Pls give it generously Wont give up till i hit a 700+
Of the following, which is most nearly equal to √10?
a 3.3 b 3.4 c 3.5 d 3.1 e 3.2
The correct answer is 3.2 (E), not D.
Let us simply take squares of all options. 3.1 * 3.1 = 9.61 3.2 * 3.2 = 10.24 Since it has already crossed 10 (i.e. the square of √10), we need not go further and need to decide between 3.1 and 3.2 10 - 9.61 = 0.39 10.24 - 10 = 0.24 Since 0.24 is lesser of the both, so 3.2 is closer. Hence (E).