Find the average of all the numbers between 17 and 32 which are divisible by 3.
Choose the correct answer.
A) 15 B) 18 C) 20 D) 26 E) None
Sol.   Average = (21+ 24+ 27+ 30/ 4) = 102 / 4= 
<gadget id="calculator">102 / 4</gadget>
<output>51/2 = around 25.5</output>
25.5   Answer 26
<result>D</result>
Find the average of all the numbers between 17 and 32 which are divisible by 3.