School student

The probability that a school student has a skateboard is 0.34, the probability that he has a bicycle is 0.81, and the probability that he has a skateboard and a bicycle is 0.22. What is the probability that a randomly selected student has a skateboard or bicycle?

Correct answer:

p =  0.93

Step-by-step explanation:

p1=0.34 p2=0.81 p12=0.22  p=p1+p2p12=0.34+0.810.22=0.93

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