Q. The average of first nine multiples of 3 is ?
✅ Correct Answer: (C)
15.0
Explanation: Average = ( 3 + 6 + 9 + 12 + 15 + 18 + 21 + 24 + 27 ) / 9
= 3(1+2+3+4+5+6+7+8+9)/9
= ( 45 / 3 )
= 15
Explanation by: Mr. Dubey
Average = ( 3 + 6 + 9 + 12 + 15 + 18 + 21 + 24 + 27 ) / 9
= 3(1+2+3+4+5+6+7+8+9)/9
= ( 45 / 3 )
= 15
= 3(1+2+3+4+5+6+7+8+9)/9
= ( 45 / 3 )
= 15