Question

Q} What is the arithmetic mean of first n natural numbers?

Answer 1

find the arithmetic mean of the first "n" natural numbers. look at the pattern: (1+2)/2=3/2=1.5 and the next natural number is 3 and 3/2=1.5. (1+2+3)/3=6/3=2 and the next natural number is 4 and 4/2=2. (1+2+3+4)/4=10/4=2.5 and the next natural number is 5 and 5/2=2.5.

Answer 2

hi frnd

First n natural numbers are, 1,2,3,..........n

Sum of these numbers =1+2+3+.....+n=2n(n+1)

Hence arithmetic mean =Total numbersSum of numbers=n2n(n+1)=2n+1

hope this helps you

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