Find the value of given expression. 

[76 – {90 ÷ 5 ⨯ (24 – 36 ÷ 3) ÷ 3}] 

Simplify : $$\sqrt{[(12.1)^2-(8.1)^2]÷[(0.25)^2+(0.25)(19.95)]} $$

The value of x in the given equation
$$ {23 ^2 + \sqrt{x}=625}$$

The value of is:

The value of 24 ÷ 4 ×(3 +3) ÷2 is:

What mathematical operation should come at the place of ‘?’ in the equation:
2 ? 6 – 12 ÷ 4 +2 =11.

If 1.5 a=0.04 b then .

1-[5-{2+(-5+6-2)2}] is equal to