The odd numbers between 60 and 75 are: 61, 63, 65, 67, 69, 71, 73
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38 of them.
61, 67, 71, and 73
The odd numbers between 70 and 90 are 71, 73, 75, 77, 79, 81, 83, 85, 87, and 89. We know right away that 75 and 85 are composite, since they're divisible by 5. 81 is composite since it is the square of 9. 77 is obviously divisible by 11, so it, too, is composite. 87 is divisible by 3 since 8 + 7 = 15, which is divisible by 3. Therefore, and trust me, I double-checked the rest, 75, 77, 81, 85, and 87 are the composite, odd numbers between 70 and 90.
75 - 1 = 74 numbers between 1 and 75. Divide 74 by 2 = 37 even numbers.
All of the whole numbers between 50 and 75 are composite numbers, except 53, 59, 61, 67, 71, and 73.