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What is the number of ways of choosing 4 cards from a pack of 52 playing cards? In how many of these Four cards are of the same suit? For cards are face cards? Cards are of the same colour? Four cards belong to four different suits? Two aqre red cards and two are black cards?
A card is drawn from a well-shuffled deck of 52 cards and then a second card is deawn. Find the probability that the first card is a heart and the second card is a diamond if the first card is not replaced.
