The tickets numbered from 99 to 116 are mixed up and then a ticket is drawn at random. What is the probability that the ticket has a number which is a multiple of 3 or 5?
Total of 18 tickets. Of them 6 are a multiple of 3 and 4 are a multiple of 5. But 105 is then counted double. So 9 out of 18 tickets are multiple of 3 or 5 = 50%
50%
99-116---> total 18 tickets multiples of 3 or 5-- 99, 100, 102, 105, 108, 110, 111, 114, 115--> 9 probability--> 9/18=50%
The tickets numbered from 1 to 30 are mixed up then a ticket is drawn at random. What is the probability that the ticket has a number which is a multiple of 3 or 5?
Ticket numbered from 1 to 20 are mixed up and a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 7 ?
Tickets numbered 1 to 37 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 4 or 10?
Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3.
