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anonymous

  • 5 years ago

A single die is rolled.find the probablity of rolling an even number or a number less then 5.

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  1. anonymous
    • 5 years ago
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    In probability if it is 'or' you have to add all probility

  2. anonymous
    • 5 years ago
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    so what would you add?

  3. anonymous
    • 5 years ago
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    all the chances that it is even + all the chances that it is number lower than 5

  4. anonymous
    • 5 years ago
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    so 5+4+3+2+1?

  5. anonymous
    • 5 years ago
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    What are you chances of rolling an even number 3 out of 6 (2,4,6) so 3/6 What are you chances of rolling an number lower than 5 5/6

  6. anonymous
    • 5 years ago
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    you have six chances total and out of those you have three even numbers, so you make a fraction of the desired outcome divided by the total possible outcomes.

  7. M
    • 5 years ago
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    5/6?

  8. anonymous
    • 5 years ago
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    Remember that probilbilty is out of 1 so it can be bigger than 1

  9. anonymous
    • 5 years ago
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    I think Imranmeah91 meant can't

  10. anonymous
    • 5 years ago
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    Since what you are describing in all cases I think answer should be 1

  11. dumbcow
    • 5 years ago
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    P(even) = 3/6 = 1/2 P(less than 5) = 4/6 = 2/3 P(even and less than 5) = 2/6 = 1/3 P(even OR less 5) = 1/2 + 2/3 - 1/3 = 5/6

  12. anonymous
    • 5 years ago
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    less than 5 doesn't include 5, so 4 out of 6 = 4/6 = 2/3

  13. M
    • 5 years ago
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    even is included so includes 6

  14. anonymous
    • 5 years ago
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    but don't u have to reduce it?

  15. M
    • 5 years ago
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    no unless specifically stated

  16. anonymous
    • 5 years ago
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    even = 2, 4, 6, less than five = 4, 3, 2, 1 BUT WAIT! you already counted 2 and 4! so it is 1, 2, 3, 4, and 6 for 5 desired outcomes out of 6 possibilities = 5/6

  17. M
    • 5 years ago
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    dumbcow's answer is complete. more like proof lol.

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