kay6638
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A bucket contains 5 green tennis balls to yellow tennis balls, 6 thread tennis balls and a blue tennis balls toner removes 4 tennis balls without replacement from the bucket, what is the probability that 20 removes one yellow, one green, one blue and one more blue tennis ball?​

Respuesta :

5naka

total ball 17

without replacement

rearagement 'ygbb' --> 4!/2! = 12

probability without rearagement

[tex] \frac{2}{17} \times \frac{5}{16} \times \frac{4}{15} \times \frac{3}{14} = \frac{1}{476} [/tex]

hence total probability

[tex] \frac{12}{476} = \frac{3}{119} [/tex]

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