Question

What is the arithmetic mean of the natural numbers from 10 to 30?​

Answer 1

Step-by-step explanation:

let take 10 to 30 as A Arithmetic Progression

so a=10 d=1

term 21 gives a+(n-1)d=10+(21-1)1=30

So there are 21 terms in total

sumof AP n/2(2a+(n-1)d)=21/2(40)=20×21=420

So Arithmetic mean= 420/21=20

please mark as Brainliest!