0
Wiki User
10.
Between them they are all the integers from 30 to 50.
33,35,39,45,49
50
33, 35, 39, 45, 49
50 of them.
25
25.
31 37 41 43 47
half of (50 - 20)
The ratio of odd numbers to even numbers is 1 : 1 or 50-50.