THATS SOOO EASY!!!! there 17, 19, 23, 27, 29, 31, 37, use your brain! :)
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17,19,23,29
13
17... and 19 !
It is 7.
The numbers between 10 and 20 that are not prime are 12, 14, 15, 16 and 18. So 15 is the odd number and the rest are even numbers.