Using a standar deck of 52 cards, what is the probability of drawing four cards of the same number(eg.four aces, 4 kings, four 2s, four 3s,etc)?

3 answers

(4/52)*(3/52)*(2/52)*(1/52)

is this 4 cards of everything?

Let's just take one of the quads, say the kings

prob of 4 kings = (4/52)(3/51)(2/50)(1/49)

but there are 13 of these types
so prob of your event = 13(4/52)(3/51)(2/50)(1/49) = 1/20825

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