$$ {109.07\sqrt{?}}-{61\over 21.02} ×?=47.96\sqrt{?}$$

111.01 +41.23+(4.96)² +(2.09)²=?

What should be added at least in 1140 so that it becomes a perfect square?

The largest natural number which exactly divides the product of any four consecutive natural numbers is

The average of five consecutive number is 26, then the multiple of the first and the last number is

0.8% of a number is 31, then find the number.

Find the sum of 2x terms of the series ( 1² - 2² + 3² - 4² + ___ ) 

The real number to be added to 13851 to get a number that is divisible by 87 is :