Based on the information given, the probability of getting an odd or even number will be 0.5.
From the question given, a die is rolled once, a is the event of rolling an even number and b is the event of rolling an odd number.
A die has 6 numbers. There are 3 odd numbers and 3 even numbers.
Therefore, the probability of getting the odd or even numbers will be:
= 3/6 = 0.5
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