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13 April, 00:53

A marble is selected at random from a jar containing 4040 red marbles, 5050 yellow marbles, and 1010 green marbles. find the theoretical probability that it is either red or green.

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  1. 13 April, 04:17
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    The answer will be total green plus total red divided by all existing marbles:

    (1010 + 4040) / (1010 + 4040 + 5050) = 5050 / 10100 = 1/2 = 0.5

    Answer: 0.5
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