Find the average of the first 20 natural numbers?	Choose the correct choice from the following options
A) 10.9
B) 10.8
C) 10.2
D) 10.5
E) 10.4
Average of the first 'n' natural numbers = (n + 1)/2   We get  (20 + 1)/2= 
<gadget id="calculator"> (20 + 1)/2</gadget>
<output>21/2 = around 10.5</output>
10.5   Answer:10.5
<result>D</result>
Find the average of the first 20 natural numbers?