Question

Between which two integers does the square root of 129 lie?

A.
8 and 9

B.
9 and 10

C.
10 and 11

D.
11 and 12

Answer 1

I say D.

Answer 2

How did you find that out?

Answer 3

sqrt of 129 is 11.3578166916

Answer 4

its between 11 and 12

Answer 5

@AkashdeepDeb am I right?

Answer 6

yes

Answer 7

That's good. You don't need a calculator to solve this though.
You should know that, because
11^2 = 121
12^2 = 144

As 129 is between that. It's square root must be between 11 and 12.

Answer 8

thanks