Average of first five multiples of 10 is  Choose the correct answer:
A) 9	B) 11	C) 30	D) 15	E) 17
Explanation:   Average=10(1+2+3+4+5) / 5=150 / 5= 
<gadget id="calculator">150 / 5</gadget>
<output>30</output>
30   Option 30
<result>C</result>
Average of first five multiples of 10 is