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 3 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.)
 3 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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johnny5520
 3 years ago
Best ResponseYou've already chosen the best response.00.006? 6C2 * (6!/3!*3!)/6^6

harshit.94
 3 years ago
Best ResponseYou've already chosen the best response.0elucidate on how u got this. what first jumpred to my mind was 6c2*6c6/6^6

shaan_iitk
 3 years ago
Best ResponseYou've already chosen the best response.0Hi Johnny .. this would be (6c2 * 6!/(3!*3!))/6^6

johnny5520
 3 years ago
Best ResponseYou've already chosen the best response.0hey shaan, can you help me check the rest?

johnny5520
 3 years ago
Best ResponseYou've already chosen the best response.0ill just post it here?

johnny5520
 3 years ago
Best ResponseYou've already chosen the best response.0One 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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