Mathematics, 07.11.2020 20:30, Bassoonist

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