The sum of two numbers is 18. The greatest product of these two number can be:

How many of the following numbers are divisible by 132 ?<br> 264, 396, 462, 792, 968, 2178, 5184, 6336

The unit digit in the product 7<sup>71</sup> × 6<sup>63</sup> × 3<sup>65</s…

A number exceeds its two fifth by 75. The number is :

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

How many numbers less than 1000 are multiples of both 10 and 13 ?

Find the least number which will leaves remainder 5 when divided by 8, 12, 16 and 20.

Which of the following is a perfect square ?