What is the smallest possible integer that is evenly divisible by both 21 and 9?

The ratio of 1/4 to 3/5 is

If 100 + x = 100, then what is the value of x?

Which of the following is the best approximation of the product 21.0005 x 0.01?

How many prime numbers are there between 1 and 10?

The average of 3 numbers is 20. If two numbers are 16 and 22 the third is?

Which of the following is divisible by 4?

The number 287.782 rounded off to the nearest tenth is equal to which of the following?

(Any real number) X 0 = ?

Which of the following must be odd?
(i)Even x Even (ii)Odd x Odd (iii)Even – Odd