find the average of 15 multiples of 9
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Answer:
15 multiple of 9 are : 9, 18, 36 45, 54 . . . . . .135.
Avg = sum of all number / 15
Avg = 9 + 18 + 36 --- 126 + 135/15
Avg = 1053/15
Avg = 70.2
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