find the average of first 20 multiples of 7?  Choose the correct choice:  A) 73.5  B) 70.5  C) 63.5  D) 54.5  E) 40.5
Required average =7(1+2+3+…….+20)/20   (7*20*21)/(20*2)   (147/2)=73.5.   73.5NSWER 73.5 73.5
<result>A</result>
find the average of first 20 multiples of 7?