If you're rolling an honest, normal cube, labeled 1 through 6 . . .
-- There are 6 possible outcomes of one roll.
-- Two of them (1 and 3) are odd numbers less than 5.
The probability is 2/6 = 1/3 = 331/3%.
The 'odds' are 2 to 1 against it.
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There is a 4 in 6 (or 2 in 3) probability of rolling a number less than a five on a standard number cube.
The probability of rolling a number less than 6 on a die would be 5/6.
It is 1.
The probability is 1.
The probability of rolling a number on a die is 1 out of the number of sides on the die. So, for a six sided die, the probability of rolling a 4 is 1/6. The probability of rolling a 4 or a 5 becomes 2/6 or 1/3. This is because there are two acceptable outcomes out of six. So when finding the probability of rolling a number less than x on a y sided die, it becomes x-1 / y. It is x-1 because the outcome is to roll less than the number, not less than or equal.