math 157
posted by Rmz on .
Consider the experiment involving rolling a single die once.
What is P(even and Prime)?
I do not know how to start this can anyone help?

Which possibilities are both even and prime? Divide that by 6, the number of possibilities for a standard die.

Would they both be 1/2?

P(even and prime) means the probability of rolling a single number that is BOTH even and prime. You found P(even) and P(prime) separately.

so, because there are the same amount of even and odds wouldnt that make it a 1?

The only number that is both even and prime is 2. That is 1 possibility out of 6.

Oh.... I understand and see that now.