Question

# Harry Potter is going to the movies for a James Bond movie marathon. The probability that...

Harry Potter is going to the movies for a James Bond movie marathon. The probability that Harry Potter buys a drink is 0.55. The probability that Harry Potter buys popcorn is 0.28. The probability that Harry Potter popcorn or a drink (or both) is 0.74

What is the probability that Harry Potter does not buy a drink to take into the cinema?

What is the probability that Harry Potter buys both a drink and popcorn?
Hint: You will need all given values. A diagram may be helpful here

What is the probability that Harry Potter thinks the prices are outrageous and does not buy anything?

ans) Let be an event that Harry Potter buys a drink and be an event that Harry Potter buys popcorn. Given that and   . The probability that Harry Potter buys a drink or popcorn is   .

a) Harry Potter does not buy a drink is denoted by the event   . Therefore

b) Harry Potter buys both a drink and popcorn is denoted by the event . Therefore

c)  Harry Potter does not buy anything is denoted by the event   . Therefore

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