Find the best average of the first 10 multiples of 7....	Choose the correct choice from the following:	A) 30.5	B) 38.5	C) 40	D) 43.5	E) 55.5
the exp is - 7(1+2+3+4+5+6+7+8+9+10)/10 =&gt;   7(10(10+1)/10*2 =&gt;   7(110)/10*2 = 38.5   ANSWER 38.5
<result>B</result>
Find the best average of the first 10 multiples of 7....