500
What is the probability of the occurrence of a number that is odd or less than 5 when a fair die is rolled?
3/6 (odd numbers = 1,3 and 5)
4/6 (numbers less than 5 = 1,2,3 and 4)
2/6 (numbers that are both odd and less than 5 = 1 and 3)
3/6 + 4/6 - 2/6 =
5/6.