Question

What is the squared root of 1444?

Answer 1

`38`

Explanation:

If you can use a calculator, of course you only have to ask it, and you'll have your answer. If you can't, you must go by trial and errors, keeping in mind that you're looking for a number whose square is `1444`.

Since it's easy to remember, or to compute, that `30^2=900`, our number will surely be greater than `30`. Also, you don't need to check all the numbers: if a square of a number ends up with `4`, the number can end only with `2` or `8`. So, I tried `32^2` and `38^2`, and I found out that `38` was the right number.