[統計] 無恥第二問
A gumball dispenser has 38 orange gumball,30 purple ones,and 18 yellow ones.
the dispenser operates such that one quarter delivers 1 gumball.
usind three quarters,what is the probabilly that of the 3 gumballs obtained,
exactly 1 will be purple and 1 will be yellow?
請高手解答 拜託
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12/03 17:49, , 1F
12/03 17:49, 1F
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12/03 19:49, , 2F
12/03 19:49, 2F
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12/03 22:35, , 3F
12/03 22:35, 3F
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12/03 22:57, , 4F
12/03 22:57, 4F
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12/03 22:58, , 5F
12/03 22:58, 5F
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