What is the average of first 21 multiples of 4 ?
Choose the correct choice from the following.
A) A)44	B) B)77	C) C)79	D) D)81	E) E)82
Required average = 7(1+2+....+21) / 21   (4/21)X ( (21x22) / 2 ) (because sum of first 21 natural numbers)   = 44   44
<result>A</result>
What is the average of first 21 multiples of 4 ?