Aptitude - Probability - Discussion

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Q.

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?                         


A. 1/2 B. 2/5
C. 8/15 D. 9/20

Answer: Option D
Explaination:

 





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