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((4 choose 1)(48 choose 3)+2(4 choose 2)(48 choose 2) +3(4 choose 3)(48 choose 1)+4)/(52 choose 4)
((4 choose 1)(48 choose 3)+2(4 choose 2)(48 choose 2) +3(4 choose 3)(48 choose 1)+4)/(52 choose 4)
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