1.999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...
1.999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...
* * * * *
Good try, but no cigar! That is because numbers are infinitely dense and so it is always possible to find a number that is closer.
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The square root of 240 is irrational; the closest number depends upon how many decimal places you want. If you want the closest whole number then: √240 = 15.49193... → closest whole number is 15.
The whole number closest to the square root of 65 is 8. The whole number closest to the square root of 65 is 8.
The closest square number to 50 is 49, which is equal to 7 squared (7 x 7). To find the closest square number to a given number, you can simply take the square root of the number and round it to the nearest whole number. In this case, the square root of 50 is approximately 7.07, and the closest square number is 49.
39
That number can be represented as 2 42/100. That can be reduced to 2 21/50. The closest common fraction would be 2 2/5. That would be the exact fraction if the original number was 2.40