The least number, by which 1944 must be multiplied so as to make the result a perfect cube is 

The smallest number that must be subtracted from 1000 to make the resulting number a perfect square is 

Direction: what should come in place at question mark(?).

Simplify :

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

Evaluate: ।।।।।

If  then what is the value of c.

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