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Mathematics, 18.10.2019 09:00 ic838847

The tickets in a box are numbered from 1 to 20 inclusive. if a ticket is drawn at random and replaced, and then a second ticket is drawn at random, what is the probability that the sum of their numbers is even?

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The tickets in a box are numbered from 1 to 20 inclusive. if a ticket is drawn at random and replace...
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