Mathematics, 09.12.2020 21:30, mccdav5100

There is a bag with only red marbles and blue marbles. The probability of randomly choosing a blue marble is 2/9 . There are 63 marbles in total in the bag and each is equally likely to be chosen. Work out how many red marbles there must be.

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There is a bag with only red marbles and blue marbles. The probability of randomly choosing a blue m...