Question

find the sum of all natural number between 20 to100?​

Answer 1

Answer:

The sum of natural numbers between 20 and 100 is 4760.

Step-by-step explanation:

Number of terms = 80. 1st term = 20. Common difference = 1 ( that is the difference between any two terms is 1) ...

Sn=n/2[2a+(n-1)d] Where n=80 (n= number of natural numbers to be calculated) a=20 (a= starting number)

Hope this help you