Question

first 21 natural numbers average​

Answer 1

Answer:

"The number series 1, 2, 3, 4, . . . . , 20, 21. Therefore, 231 is the sum of positive integers upto 21."

Answer 2

Step-by-step explanation:

The number series 1, 2, 3, 4, . . . . , 20, 21. Therefore, 231 is the sum of positive integers upto 21.