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Rainbow [258]
3 years ago
7

There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is 7 8 . There are 72 m

arbles in total in the bag and each is equally likely to be chosen. Work out how many red marbles there must be.
Mathematics
1 answer:
Arturiano [62]3 years ago
8 0

Answer:

63 red marbles.

Step-by-step explanation:

Because the probability of drawing a red marble is 7/8, the number of red marbles = 7/8 * 72

= 7 * 9

= 63.

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