A

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Q. The average of first nine multiples of 3 is ?

  • (A) 12.0
  • (B) 12.5
  • (C) 15.0
  • (D) 18.5
  • Correct Answer - Option(C)
  • Views: 9
  • Filed under category Math
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Explanation by: Admin
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

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