What is the value of $${0.74×1.23×0.13\over (0.37)^{3}+(0.41)^{3}-8(0.39)^{3}}$$ ?

If 12x – 15 y =9x + 5y, the value of $$ {x^{2}+{y^{2}}\over{x^{2}-y^{2}}}$$ is

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

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

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

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

The value of $${4- \sqrt{0.04} \over 4+\sqrt{0.4} } $$  is closed to

The square root of a positive number less than 100 lies between