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watermelon26 Group Title

You are rolling two dice at the same time. What is the probability of rolling a sum of 6 or 7?

  • 2 years ago
  • 2 years ago

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  1. myko Group Title
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    what do you mean by sum of 6 and 7? two 6 or two 7?

    • 2 years ago
  2. cinar Group Title
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    |dw:1336326707593:dw|

    • 2 years ago
  3. pastory Group Title
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    p(e)=7+6=13

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  4. cinar Group Title
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    \[P(6\cup7)=P(6)+P(7)-P(6n7)\]

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  5. cinar Group Title
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    |dw:1336326941869:dw|

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  6. sheg Group Title
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    Dice 1 2 3 4 5 6 1 2 3 4 5 6 7 2 3 4 5 6 7 8 3 4 5 6 7 8 9 4 5 6 7 8 9 10 5 6 7 8 9 10 11 6 7 8 9 10 11 12 now in this 6 comes 5 times and 7 comes 6 times and total sample space is 36 so probability of 6or,7 is 11/36

    • 2 years ago
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