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A box contains 5 white balls and 6 black balls. Five balls are drawn out of the box at random. What is the probability that they all are white?

 Aug 26, 2018
 #1
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P(all white on first 5 draws)  =

 

5/11 * 4 / 10 * 3/ 9 * 2/ 8 * 1/7  =

 

5 / 11  * 2 / 5  * 1/3 * 1/4 * 1/7 =

 

(2 /11) *  (1/12) * (1/7)  =

 

2 / 924  =

 

1 / 462

 

 

cool cool cool

 Aug 26, 2018

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