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SectionCQuestion numbers 10 to 19 carry three marks eachQ.10) Tickets numbered 1 to 20 are mixed up &then a ticket is drawn.What is the probabilitythat the ticket drawn has a number which is multiple of 3 or 5 |
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Answer» multiple of 3=3,6,9,12,15,18 total 6multiple of 5=5,10,15,20 total 4multiple of 15=15 total 1so probability of 3 or 5=(6+4-1)/20=9/20 |
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