Question 784866: If you roll a pair of regular dice, in how many ways can at least one of the dice be a 5? Please explain the method.
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! If you roll a pair of regular dice, in how many ways can at least one of the dice be a 5? Please explain the method.
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If 1st die is 5 the 2nd may be 1,2,3,4,5, or 6::: 6 ways
If 2nd die is 5 the 1st may be 1,2,3,4,5, or 6::: 6 ways
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(5,5) was counted twice so subtract it once.
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Answer:::: 6 + 6 -1 = 11ways
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Cheers,
Stan H.
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