hariskhaan12 hariskhaan12

28-12-2019
Mathematics

contestada

tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random what is the probability that the ticket drawn has a number which is multiple of 3 and 5?

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zoeybenna zoeybenna

21-03-2021

Total number of outcome = 20

Probability of picking multiple of 3 out of 1 - 20 = (6 items of 20) = 6/20

Probability of picking multiple of 5 out of 1 - 20 = (4 items of 20) = 4/20

Therefore p(multiples of 3 or 5) = 6/20 + 4/20 = 10/20 = 1/2.

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