$$\left( {{3^{25}} + {3^{26}} + {3^{27}} + {3^{28}}} \right)$$     is divisible by :

The difference between three times and seven times of a number comes to 36. What is the number?

If 4x<sup>2</sup> - 12x + k is a perfect square. then the value of k is ?

The greatest number among the following : $$0.7 + \sqrt {0.16} ,$$   $$1.02 - \frac{{0.6}}{{24}},$$   …

A magazine publisher publishes a monthly magazine of 84 pages. One I found that in a magazine 4 pages was missing. One o…

Find the unit digit in the product : $${\left( {4387} \right)^{245}}$$   $$ \times {\left( {621} \right)^{72}}…

A man sells chocolates which are in the boxes. Only either full box or half a box of chocolates can be purchased from hi…

Given, N = 98765432109876543210 ..... up to 1000 digits, find the smallest natural number n such that N + n is divisible…