Subject
Quantitative Aptitude
Topic
Probability
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 a multiple of 3 or 5 ?
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 a multiple of 3 or 5 ?
ক)
2/3খ)
1/2গ)
7/8ঘ)
4/5Explanation
Multiples of 3 below 20 are 3, 6, 9, 12, 15, 18 Multiples of 5 below 20 are 5, 10, 15, 20 Required number of possibilities = 10 Total number of possibilities = 20 Required probability = 10/20 = 1/2.Related questions
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