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Find probability that number is a multiple of five and seven

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Reference no: EM131558190

Question: Fifty raffle tickets are numbered 1 through 50, and one of them is drawn at random. What is the probability that the number is a multiple of 5 or 7? Consider the following "solution": Since 10 tickets bear numbers that are multiples of 5 and since 7 tickets bear numbers that are multiples of 7, we conclude that the required probability is

10 + 7 = 17
50   50   50

What is wrong with this argument? What is the correct answer?

Reference no: EM131558190

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