Mathematics is independent of each other.

Math problem: Let random variables X and Y be independent of each other, and their probabilities are shown in the figure respectively. To find P(X=Y), there are two cases: X=Y = 0 and X=Y= 1. When X=Y=0, p (X=Y=0) = p (x = 0) p (y = 0) = 0.4× 0.

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