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N=52
na=2
P(A)=²/₅₂
b)B-wylosowano króla i dame
N=52
nb=16
P(B)=¹⁶/₅₂=⁴/₁₃
c)C-wylosowano co najmniej jednego asa
C=52
nc=4
P(C)=⁴/₅₂=¹/₁₃