Question

Express 49 as the sum of 7 odd nos. Write the formula how you do that.

Answer 1

We know that the sum of first n odd natural numbers is n^2

49 = 7^2

Therefore, 49 is the sum of first 7 odd natural numbers.

49 = 1 + 3 + 5 + 7 + 9 + 11 + 13