SOLUTION: Compute the probability of rolling an odd or a prime number when you roll a six-sided die.

Question 1074692: Compute the probability of rolling an odd or a prime number when you roll a six-sided die.
Answer by Edwin McCravy(20054) (Show Source): You can put this solution on YOUR website!

The numbers on a die which are either odd or prime are these four:
1,2,3, and 5

All the numbers on a die are these six:
1,2,3,4,5, and 6.

So there are 4 ways out of 6 that you can roll an odd or prime number.

When calculating probabilities, "out of" means "over" or "divided by.

So 4 ways out of 6 means there is a probability of "4 over 6" or a 
probability of 4/6 which reduces to a probability of 2/3. That means
that two-thirds if the time when you roll a die it will land either
an odd number or a prime number. 

[or both if you happen to roll 3 or 5.]

Edwin

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