Question: Suppose A and B independently choose 3 among 10 objects. Find the expected value of the number of objects (a) who choose A and B,

Suppose A and B independently choose 3 among 10 objects. Find the expected value of the number of objects (a) who choose A and B, (b) who choose neither A nor B, (c) who only chooses A or B. You have to calculate three expectations.

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