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OpenStudy (anonymous):
A box contains cards number 1-10. A card is drawn at random, then replaced, and a second card is drawn. What is the probability that the first number is a multiple of 5 and the second number is prime?
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OpenStudy (anonymous):
P(A or B) = P(A) + P(B) - P(A and B) does this help?
OpenStudy (anonymous):
@sourwing yes thanks
OpenStudy (anonymous):
uhm... ok. My answer actually didn't help if you noticed it
OpenStudy (anonymous):
@sourwing yeah it did i answered the question already
OpenStudy (anonymous):
what's your answer?
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