Question

find the sum without actually adding the
the following odd numbers

1. 1+3+5+7+.... .... ....+35

2. the first 99 odd natural numbers​

Answer 1

Step-by-step explanation:

1+3=4

1+3+5=9

means if we add 2numbers2^2

we added17 so 17^2

Answer 2

Ans. 1) Sum of first natural odd number is n square (n^2)

so , here n is 17 (then answer would be square of 17

(17)^2 = 289

2. again same case but here n is 99

then n^2 = (99)^2 == 9801

#BAL

#answerwithquality