Express 49 as the sum of 7 odd numbers

Express 121 as the sum of 11 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.

Express A as the sum of a hermitian and skew-hermitian matrix,where A=[(2+3i,7),(1-i,2i)],i=sqrt-1.

Prove that the product of two odd numbers is odd.

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

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

The houses of a row are numbered consectively from 1 to 49. show that there is a value of x such that the sum of the houses preceding the house numbered x is equal to the sum of the numbers of the houses following it. Find this value of x.

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 :

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