Find the average of first 40 natural numbers.
Find the average of first 40 natural numbers.
Answer/Solution
20.5
Steps/Work
Sum of first n natural numbers = n( n+1)/2
So, sum of first 40 natural numbers = 40*41/2 = 820
Required average =820/40 =20.5
ANSWER:A
So, sum of first 40 natural numbers = 40*41/2 = 820
Required average =820/40 =20.5
ANSWER:A