Q16 of 98 Page 705

There are 25 tickets numbered as 1, 2, 3, 4, ....., 25 respectively. One ticket is drawn at random. What is the probability that the number on the ticket is a multiple of 3 or 5?

Total numbers of elementary events are: 25


Let E be the event of getting a multiple of 3 or 5


The favourable numbers are: 3, 6, 9, 12, 15, 18, 21, 24, 5, 10, 15, 20, 25


Numbers of favourable events = 13


P (E) = 13/25

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