The sum of any two numbers: odd-even ratio

The ratio of odd and even numbers in the sum of any two numbers in the lottery numbers.

Odd Number: such as 1,3,5,7,9...

Even Number: such as 0,2,4,6,8...

0: 0 odd number(s)，2 even number(s)

1: 1 odd number(s)，1 even number(s)