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C2.2. A certain travel club has 1000 members. 60% of these members are males. 45% of...

C2.2. A certain travel club has 1000 members. 60% of these members are males. 45% of these members pay by credit card when they travel including 180 females. If a member is selected from the travel club at random, what is the probability that, the member is a male or a credit card user?

Math   Statistics-And-Probability   
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Answer #1

Let A be the event that travel club member is a male

B be the event that member is a credit card user

now the number of people those are credit card user is 0.45*1000=450

out of which 180 are females. then there are 450-180=270 males credit card users

Then the probability that member is a male and credit card user is

the probability that, the member is a male or a credit card user is

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