The value of $$\left( {99\frac{{95}}{{99}}} \right) \times 99$$    is :

The rightmost non-zero digit of the number 30<sup>2720</sup> is

The greatest whole number, by which the expression n<sup>4</sup> + 6n<sup>3</sup> + 11n<sup&g…

A number is doubled and 9 is added, If the resultant is tripled, it becomes 75. What is the number ?

Unit digit of the number (22)<sup>23</sup> is :

The least number that must be subtracted from 63520 to make the result a perfect square is -

The remainder when 3<sup>0</sup> + 3<sup>1</sup> + 3<sup>2</sup> + 3<sup>3<…

Find the remainder when 67<sup>107</sup> is divided by 7.