Question

Find the sum of first 20 odd naturalnumbers​

Answer 1

Answer:

400

Step-by-step explanation:

1+3-5+7------+41

it is a ap

sum is 400

hope it helps you

##follow me

Answer 2

Step-by-step explanation:

first 20 natural odd numbers are: 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,

39

sum of first 20 natural odd natural numbers= square of 20

=20×20

=400

therefore sum of first 20 odd natural numbers=400