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If Greg rolls four fair six-sided dice, what is the probability that he rolls an equal number of 1's and 6's?

 Oct 14, 2020
 #1
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You mean "what is the probability of rolling 2 "ones" and 2 "sixes"?

 

The probability is: 4C2 * 2C2 =6 / 6^4 = 1 / 216

 
 Oct 14, 2020
 #2
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What about one 1 and one 6?

 
Alan  Oct 14, 2020
 #3
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....and 3  ones   and 3 sixes?

 
Guest Oct 14, 2020

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