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

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

Determine the sum of the numbers lying between 100 and 200 which are not divisible by 3.

Determine the sum of the numbers lying between 100 and 500 which are divisible by 11.

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

Find the sum of all numbers lying between 1 and 100 which are divisible by 4 or 5.

Find the sum of all the natural number less than 100 which divisible by 6.

Find the perfect square numbers between 30 and 40, 50 and 60

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

Solution of equational problems: A number exceeds another by 4 and the sum of the two numbers is 64. Find them.

Express 49 as the sum of 7 odd numbers.