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A bag contains 6 red and 5 blue balls and another bag contains 5 red and 8 blue balls. A ball is…
A bag contains 6 red and 5 blue balls and another bag contains 5 red and 8 blue balls. A ball is drawn from the first bag and without noticing its colour is placed in the second bag. If a ball is drawn from the second bag, then find the probability that the drawn ball is red in colour.
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From ISC 2022 Specimen Mathematics Paper 1, question 5(a).