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johnny5520

  • 2 years ago

A dice is rolled 6 times. The probability that two different numbers will turn up three times each is: . (Write your answer in the form 0.xxxx, rounded up to the 4th digit.)

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  1. johnny5520
    • 2 years ago
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    0.006? 6C2 * (6!/3!*3!)/6^6

  2. harshit.94
    • 2 years ago
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    elucidate on how u got this. what first jumpred to my mind was 6c2*6c6/6^6

  3. shaan_iitk
    • 2 years ago
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    Hi Johnny .. this would be (6c2 * 6!/(3!*3!))/6^6

  4. johnny5520
    • 2 years ago
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    hey shaan, can you help me check the rest?

  5. johnny5520
    • 2 years ago
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    ill just post it here?

  6. shaan_iitk
    • 2 years ago
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    kk ..shoot

  7. johnny5520
    • 2 years ago
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    ill repost here?

  8. johnny5520
    • 2 years ago
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    One is looking to invest 20 thousand dollars among 4 opportunities. Each investment should be an integral in units of 1 thousand dollars. A portfolio corresponds to an investment policy. For example, (5,6,3,6) is a portfolio that invests 5 thousand dollars in the first opportunity, 6 thousand in the second, 3 thousand in the third, and 6 thousand in the fourth. (0,9,8,3) is another portfolio in which no investment is made in the first opportunity. The total number of portfolios is:

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