The value of $${\sqrt{40+\sqrt{9\sqrt{81}}} }$$ is

Which of the following is a perfect square as well as a cube ? 

Simplification the following equations

Which smallest number must be added to 2203 so that we get a perfect square? 

Simplification the following equations shown below

What approximate value should come at place of the question mark(?) in the following question?

Direction : What value should come in the place of question mark (?) in the following questions?

125% of 2440 – 75% of 1856 = ?