15.5
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I added up all the numbers to get 126, then i divided that all by 7 to get 18. your final answer is 18.
They are: 12, 14, 15, 16 and 18
There are no such numbers. 15+16+17+18+19 = 85 and 16+17+18+19+20 = 90 Such question must be answered in terms of integers because otherwise the concept of consecutive cannot be used.
9
The composite numbers between 11 and 19 are: 12 14 15 16 18 The other numbers, 11, 13, 17, and 19, are all prime.