When a woman goes for shopping she may buy several goods between them clothes and shoes. She has calculated the probabilities of her preferences as follows: The probability that she buys clothes, equals 0.6 The probability that she buys shoes and she does not buy clothes, equals 0.2 The probability that she buys both clothes and shoes, equals 0.2 Find the probability that in one shopping day she: (a) buys at least one of the goods “clothes” or “shoes”.  (b) buys clothes and not shoes.  (c) buys exactly one of the goods “clothes” and “shoes”.  (d) buys at most one of the goods “clothes” and “shoes”.

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