Which one of the following numbers is not a square of any natural number ?

The product of two positive integers is 2048 and one of them is twice the other. Then the small of the number is :

Six bells start ringing together and ring at intervals of 4, 8, 10, 12, 15 and 20 seconds respectively. how many times w…

Which is the largest among the numbers : $$\root 3 \of 7 ,\root 4 \of {13} ,\sqrt 5 $$

The sum of 100 terms of the series 1 - 3 + 5 - 7 + 9 - 11 .......... is:

There are 50 boxes and 50 persons. Person 1 keeps 1 marble in every box, person 2 keeps 2 marbles in every 2nd box, per…

The number 0.121212 . . . . . in the form $$\frac{p}{q}$$ is equal to -

Among the following statements, the statement which is<strong> 'not correct'</strong> is :