Mathematics, 18.01.2021 21:20 nook4boo

There is a bag with only red marbles and blue marbles. The probability of randomly choosing a blue marble is 112.
There are 84 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...