What will come in the place of the question mark $(?)$ in the following expression?
$25.05 \times 123.95 + 388.999 \times 15.001 = ?$

If $p=9$ and $q=\sqrt{17}$,then the value of $(p^{2}-q^{2})^{\frac{-1}{3}}$ is equal to

Each member of a club contributes as many rupees and as many paise as the number of members of the club. If the total contribution is $Rs. 2525$,then the number of members of the club is:

In a certain college,the number of girls is twice the number of boys. $\frac{1}{5}$ of the girls and $\frac{1}{8}$ of the boys took part in a social camp. What part of the total number of students took part in the camp?

If $x(3 - \frac{2}{x}) = \frac{3}{x}, x \neq 0,$ then the value of $x^2 + \frac{1}{x^2}$ is

If we multiply a fraction by itself and divide the product by the square of its reciprocal,the fraction obtained is $3 \frac{13}{81}$. The original fraction is