Each guess has a 25% chance of being correct and a 75% chance of being wrong. Guessing right or wrong on one question does not affect the odds on the next one.
Every question is just a happy little opportunity.
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Rafa
There's no fun in playing it safe. Why not try something a little unhinged?
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Q: Preet writes a multiple-choice test.The test has 5 questions.Each question has 4 possible answers.Preet guesses each answer.Find the probability of each event?