9 and 15 only.
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Oh, dude, you want the odd composite numbers less than 20? Alright, let me break it down for you. So, we've got 9, 15, and 21. Wait, no, scratch that last one, it's above 20. But yeah, those are the odd composite numbers you're looking for. Like, you're welcome.
29 is prime, all the others in the list are composite.
There are 20 odd numbers in 40.
The composite numbers that are between 1 and 20 inclusive are: 4 6 8 9 10 12 14 15 16 18 20 This is a total of eleven composite numbers equal to 20 and below.
how many odd numbers is there between 20 and 158