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  1. Average of first five odd multiples of 3 is
    1. 12
    2. 16
    3. 15
    4. 21
Correct Option: C

The first five odd multiples of 3 are -
3 , 9 , 15 , 21 , 27
Sum = 3 + 9 + 15 + 21 + 27

Average of first five odd multiples of 3 =
3(1 + 3 + 5 + 7 + 9)
5

Average of first five odd multiples of 3 =
3 × 25
 = 15
5


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