Express 121 as the sum of 11 odd numbers

Express 49 as the sum of 7 odd numbers

State whether the following statements are true or false. Give reasons for your answers. Square number can be written as the sum of two odd numbers .

Prove that the sum of two odd numbers is even.

Prove that the product of two odd numbers is odd.

In a G.P. of even number of terms, the sum of all terms in 5 times the sum of the odd terms. The common ratio of the G.P. is :

The sequence of odd natural numbers is divided into groups 1,3,5,7,9,11,"…." and so on. Show that the sum of the numbers in nth group is n^(3) .

Find the sum of first n odd natural numbers.

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

Find the sum of natural odd numbers from 1 to 100.

Express the following statements as a linear equation in two variables. The sum of two numbers is 34.