Question: Gears produced by a grinding process are categorized either as conforming (suitable for their intended purpose), degraded (unsuitable for the intended purpose but usable for

Gears produced by a grinding process are categorized either as conforming (suitable for their intended purpose), degraded (unsuitable for the intended purpose but usable for another purpose), or scrap (not usable). Suppose that 74% of the gears produced are conforming, 15% are degraded, and 11% are scrap. Ten gears are selected at random.

What is the probability that more than two are either degraded or scrap?

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