Question

How many numbers are equal to the sum of two odd, one-digit numbers?

Answer 1

i think infinite

Answer 2

i think i figured it out :)

1+1=2 3+1=4 5+1=6 7+1=8 9+1=10
1+3=4 3+3=6 5+3=8 7+3=10 9+3=12
1+5=6 3+5=8 5+5=10 7+5=12 9+5=14
1+7=8 3+7=10 5+7=12 7+7=14 9+7=16
1+9=10 3+9=12 5+9=14 7+9=16 9+9=18

2 4 6 8 10 12 14 16 18

Answer 3

there are 9 numbers that are equal to the sum of two odd, one-digit numbers