From 1, 2, 3 In 2008, take any two numbers, then the sum of the two numbers is the probability of even numbers
Odd 1004
Even number 1004
Sum is even, two odd or two even numbers
Probability = [C (21004) + C (21004)] / C (22008)
Odd 1004
Even number 1004
Sum is even, two odd or two even numbers
Probability = [C (21004) + C (21004)] / C (22008)