Find the average of first 30 natural numbers.	Pick one.
A) 12 B) 15.5 C) 14.5 D) 16 E) 17
Explanation:   Sum of first n natural numbers = n(n+1)/2   Hence, sum of first 30 natural numbers = (30 x 31)/2 = 465   Therefore, required average of = 465/30= 
<gadget id="calculator">465/30</gadget>
<output>31/2 = around 15.5</output>
15.5   ANSWER 15.5
<result>B</result>
Find the average of first 30 natural numbers.