Find the average of the first five prime numbers.

The sum of three consecutive even numbers is 48. Find the smallest number.

If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is:

Find the average of all prime numbers between 10 and 25.

What is the decimal equivalent of the binary number (10110)?

Three numbers are in the ratio 1:2:3 and their HCF is 12. Find the numbers.

A computer uses which number system to store data and perform calculations?

The ratio of two numbers is 3:4 and their L.C.M. is 180. The first number is:

Three numbers are in the ratio 3 : 2 : 5 and the sum of their squares is 1862. Find the smallest number.