The value of 24 ÷ 4 ×(3 +3) ÷2 is:

2x + 4y – 8xy -1 =?

$$ { \sqrt{(0.798)^2+0.404×0.798+(0.202)^2}+1=?} $$

5-[4-{3-(3-3-6)}] is equal to:

If the average of 11, 23 and x is 40, then what is the value of x?

Assume that
$$\sqrt{3} = 3.605 \ (approximately)  $$
$$\sqrt{130} = 11.40 \ (approximately)  $$
Find the value of
$$\sqrt{1.3} + \sqrt{1300}+\sqrt{0.013}  $$

The smallest natural number, by which 3000 must be divided to make the quotient a perfect cube, is : 

The largest number of five digits, which is a perfect square is