Find the value of given expression. 

[76 – {90 ÷ 5 ⨯ (24 – 36 ÷ 3) ÷ 3}] 

If a² + a + 1 = 0 then the value of a⁹ is. 

Simplify : $$ {(7) ^{2} ÷(7^{1\over 2})^{4}}$$

The product of two whole numbers is 37. The square root of the difference of the numbers is

In a garden of 42 trees, 3/7 of them are Neem trees and the rest are Mango trees. Find the number of Mango trees.

 If $$ x=\sqrt{(1.96)}-\sqrt{(0.04)}$$ then the value of x is

If the sum and difference of two number are 20 and 8 respectively, then the difference of their squares is: 

If $$ {1\over3} ({12x\over5}-{1\over2})+{6\over5}={7\over6}$$ then what is the value of x?