Question

What is the sum of first n odd natural numbers?​

Answer 1

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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. if we apply odd number theorem: sum of first 10 odd numbers = n * n = 10 * 10 = 100.

Answer 2

Answer:

1 + 3 = 4  

(4 = 2 x 2)

Step-by-step explanation:

Sum of first odd number = 1.

Sum of first two odd numbers = 1 + 3 = 4 (4 = 2 x 2).