digits 1, 2, 3. The board of directors of a corporation must select a president, a secretary, and a treasurer. In how many possible ways can this be accomplished if there are 22 members on the board of directors? 4. If P(A) = 0.5, P(B) = 0.8, and P(A or B) = 0.9, find P(A and B). %3D %3D

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A:

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A:

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A:

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A: