Say that the probability that someone has a wireless mouse for their computer is 0.4 and the probability that someone does not have a wireless keyboard is 0.3. The probability that someone has both a wireless mouse and a wireless keyboard is 0.2. Let the event A denote someone having a wireless mouse and event B denote someone having a wireless keyboard.  a. What is the probability that someone has either a wireless keyboard or a wireless mouse? b. What is the probability that someone doesn’t have a wireless mouse or doesn’t have a wireless keyboard?

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