Question

Find the sun of first n odd natural numbers​

Answer 1

Answer:

odd natural numbers are 1,3,5,.......so on.

Step-by-step explanation:

therefore use formula Sn=n/2(2a+n-1 x d)

here n=?,a=1,d=2

use it and mark me as brainest.

hope u understand

Answer 2

2n+1, 2n+3, 2n+5, 2n+7

Step-by-step explanation:

1.Any number multiplied with 2 gives even number

2.Here 'n' is any number and '2n' even number

3.so sum of an even number and an odd number is odd

4.Here 1,3,5,7 are odd numbers

5.Hence,2n+1,2n+3,2n+5,2n+7 are odd numbers

Hence proved

hope you understood