3 years ago

An urn contains 5 white ball and 8 black balls. 4 balls are randomly selected.

Mathematics

1 answer:

larisa86 [58]3 years ago

5 0

$|\Omega|=13^4=28561\\ |A|=8^3\cdot5=2560\\\\ P(A)=\dfrac{2560}{28561}\approx9\%$

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