Simplification Questions for Bank PO with Answers

Simplify  $$ ^{3}\sqrt{-2197} × ^{3}\sqrt{{-125}} \ ÷ ^{3}\sqrt{27\over512}$$.

(0.04)^-1.5 on simplification gives: 

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

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

If $$ {3\sqrt{{1-a}\over{a}}}+9={19-3\sqrt{{a}\over{1-a}}}$$, then what is the value of a?

The sum of the squares of two positive integers is 100 and the difference of their squares is 28. The sum of the numbers is: 

The smallest positive integer n for which 864 x n is a perfect cube, is: 

Given that ( 1² +2²+3²+………..+10²)=385, the value of (2²+4²+6²+……20²) is equal to

The largest number of five digits, which is a perfect square is 

The sum of a positive integer and its square is 2450. The positive integer is :