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Mathematics, 30.11.2021 05:40 renaudciera

A shipment contains 7 igneous, 5 sedimentary, and 5 metamorphic rocks. If 9 rocks are selected at random, find the probability that exactly 5 are sedimentary.

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A shipment contains 7 igneous, 5 sedimentary, and 5 metamorphic rocks. If 9 rocks are selected at ra...

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