Find the average of the first 20 natural numbers?	Choose the correct choice from the following answers.
A) 18.5
B) 10.0
C) 10.4
D) 10.5
E) 10.2
Average of the first 'n' natural numbers = (n + 1)/2   We get (20 + 1)/2 = 10.5.Answer: 10.5
<result>D</result>
Find the average of the first 20 natural numbers?