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27-10-2022
Mathematics

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Suppose a jar contains 485 red marbles and 70 blue marbles. If you reach in the jar and pull out 2 marbles at random, find the probability that both are red.

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27-10-2022

Answer:

The probability that both are red is 0.7635

Explanation:

Given that the jar contains:

485 red marbles

70 blue marbles

555 total marbles

The probability of pulling out 2 marbles at random is:

485/555 * 484/554

= 97/111 * 242/277

= 0.7635

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