Direction : What should come in place of the question (?) in the following question.

(41) ² + (38)² × (0.15)²=?

Simplify the following equation.
$${(785.785.785+435.435.435) \over(785)^{2}+(435)^{2}-(785)(435)}$$

23+ 3+33+333+3.33=?

If (x +y) = 6 and x² + y² = 20 then find the value of (x - y) ².

How many perfect squares lie between 120 and 300? 

Direction : What should come in place of the question (?) in the following question.

(47 × 588) ÷ ( 28 × 120)=?

The number, whose square is equal to the difference between the squares of 975 and 585, is: 

If $${4x^2={15^2-9^2}}$$ then the value of x is