The average of first 20 even numbers is? Choose the correct option:
A) 19
B) 18
C) 16
D) 11
E) 21
Sum of 20 even numbers = 20 * 21= 
<gadget id="calculator">20 * 21</gadget>
<output>420</output>
420   Average=420/20= 
<gadget id="calculator">420/20</gadget>
<output>21</output>
21   Answer:21
<result>E</result>
The average of first 20 even numbers is?