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You roll a six-sided number cube find theprobabilsty of rolling each of the followingP(1 or 6)

User RobertsonM
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1 Answer

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23 votes

When you roll a six-sided number cube you can get the next set of possible results:


\lbrace1,2,3,4,5,6\rbrace

You have a total of 6 possible results.

From the set of possible results you get the set of presults that are 1 or 6:


\lbrace1,6\rbrace

You have 2 results that are 1 or 6

The probability of rolling (1 or 6)​ is: The number of results that are 1 or 6 divided in the total number of possible results:


P(1or6)=(2)/(6)=(1)/(3)Then, the probability of rolling (1 or 6)​ is 1/3
User Saket
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