Find the least number that is divisible by all the numbers between 1 and 8.

The least number that is divisible by all the numbers from 1 to 3 is

Find the smallest square number that is divisible by each of the numbers 8,15 and 20.

Find the sum of all the odd numbers between 0 and 50.

Find the sum of the odd numbers between 100 and 200.

Find the least number greater than 400 which is divisible by 12, 15.

Find the sum of all odd numbers lying between 12 and 90.

How many three-digit numbers are divisible by 7?

You have seen that a number 450 is divisible by 10. It is also divisible by 2 and 5 which are factors of 10. Similarly, a number 135 is divisible by 9. It is also divisible by 3 which is a factor of 9. Can you say that if a number is divisible by any number m, then it will also be divisible by each of the factors of m?

Find the smallest perfect square number which is divisible by 4,9,and 10.

Find the least number which must be added to each of the following numbers so as to get a perfect square. Also find the square root of the perfect square so obtained. 525