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  3. 1. when a pair of balanced dice is rolled. let a =

1. When a pair of balanced dice is rolled. Let A = {the sum of the...

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Basic Math

1. When a pair of balanced dice is rolled. Let A = {the sum ofthe dice is 10}, B = {doubles are rolled}. Find P(A), P(B).

2. Four couples are randomly sat in a row. How many differentways possible if

(a) no restriction; (b) all men have to sit together and allwomen have to sit together; (c) one of the couples have to sittogether.

3.Two events A and B are investigated. P(A) = 0.35, P(B) = 0.72,the percent of chance that at least one of the event A or B occuris 90%. What is the probability that only one of the eventshappens

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