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(3) A fair die is rolled twice, independently. (a) Consider the events: A = the first number that show up is a 6| B = the

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solution: P (A) = % ;P (B) = & P(c) = 36 (3) La) P (B) = P(BOC) Brc = B 2 Plo ? Sum of two mumber is 7 = PIB) Plo D 816 b) P

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