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5 September, 18:55

A baby has 4 pink rocks, 7 red rocks, 3 white rocks and 1 black rock what is the probability of getting a red rock

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  1. 5 September, 19:20
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    Take the number of red rocks and divide it by the total number of rocks.

    7 / (4+7+3+1)

    = 7/15
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