9 and 15 only
'5' & '15' are odd numbers less than 20 , and are also multiples of '5'.
9 and 15 are the only two odd composite numbers less than twenty.
The odd prime numbers less than 20 are 3, 5, 7, 11, 13, 17, and 19.
All those not less than 20.
Seven of them.
First odd number greater than 20 is 21 Last odd number less than 200 is 199 → number of odd numbers between 20 and 200 is (199 - 21) ÷ 2 + 1 = 90
9 and 15
The first 20 odd numbers are: 13579111315171921232527293133353739.
15 and 9 are both odd, composite numbers less than 20.
Numbers that are prime can't be multiples of 10. Multiples of 10 can't be odd.
There are 5 odd numbers between 10 and 20: 11, 13, 15, 17, 19
There are 20 odd numbers in 40.