If $$\frac{3}{4}$$ of a number is 7 more than $$\frac{1}{6}$$ of the number then $$\frac{5}{3}$$ of the number is :

If sum of two numbers be a and their product be b, then the sum of their reciprocals is :

How many digit required to write numbers from 1 to 50 ?

If a and b are two distinct natural numbers, which one of the following is true ?

If (-1)<sup>n</sup> + (-1)<sup>4n</sup> = 0, then n is

The highest power of 17 which can divide exactly the following:<br /> (18<sup>2</sup> - 1) (18<sup&…

$$\,{2^{16}} - 1$$   is divisible by -

In an examination, a student scores 4 marks for every correct answer and losses 1 mark for every wrong answer. A student…