Question

what is the sum of first n odd natural numbers​

Answer 1

Answer:

An efficient solution is to use direct formula. To find the sum of first n odd numbers we can apply odd number theorem, it states that the sum of first n odd numbers is equal to the square of n.

Let n = 10, therefore sum of first 10 odd numbers is

1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 = 100

If we apply odd number theorem:

Sum of first 10 odd numbers = n * n = 10 * 10 = 100.

✨Hope it will help you.✨