SOLUTION: A card is drawn from a deck of cards one through twenty. the card is Not placed and another card is drawn. find the probability that a prime number is drawn and then a composite nu

Question 144795: A card is drawn from a deck of cards one through twenty. the card is Not placed and another card is drawn. find the probability that a prime number is drawn and then a composite number.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A card is drawn from a deck of cards one through twenty. the card is Not replaced and another card is drawn. find the probability that a prime number is drawn and then a composite number.
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# of prime: 8
# of composite: 12
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Ans: P(prime and composite) = P(prime)*P(composite | prime)
= 8/20 * 12/19 = 0.25263...
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Cheers,
Stan H.
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