Question

Find the value of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15.

• A. 64

Answer 1

The correct option is A 64
Find: 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15

We know that sum of first n odd numbers is $n\times n$.

we were given with first 8 odd numbers so, n=8

So, 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 = $8\times 8$

1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 = 64