ProbabilityPlease check
posted by bart .
Consider the experiment of rolling a single die. Find the probability of the event described. What is P(odd or prime?
Since this is an "or" problem would the problem consist of 3 chances out of 6 thus my answer = 1/2?

the odd numbers on a die are 1,3,5
the prime numbers on a die are 2,3,5
(2 is the first prime number and the only even one)
so there are 4 numbers that you are interested in
prob(odd or prime) = 4/6 = 2/3
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