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Tickets numbered from 1 to 20 are mixed ...

Tickets numbered from 1 to 20 are mixed up together 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 7?

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Tickets numbered from 1 to 20 are mixed up together 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 ?

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‌Tickets‌ ‌numbered‌ ‌1‌ ‌to‌ ‌20‌ ‌are‌ ‌mixed‌ ‌up thoroughly‌ ‌and‌ ‌then‌ ‌a‌ ‌ticket‌ ‌is‌ ‌drawn‌ ‌at‌ ‌random.‌ ‌The‌ probability‌ ‌that‌ ‌the‌ ‌ticket‌ ‌has‌ ‌a‌ ‌number‌ ‌which‌ ‌is‌ ‌multiple‌ ‌of‌ ‌3‌ ‌or‌ ‌7‌ ‌is‌

RD SHARMA ENGLISH-PROBABILITY-All Questions
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