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Rolling to score (Posted on 2010-11-15) Difficulty: 4 of 5
We roll five standard dice (sides numbered 1 to 6) and write down the sum of the top three i.e. of the 3 highest values.
What is the probability to get 15 ?

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.3333 (3 votes)

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Hints/Tips re: analytical attempt at it | Comment 5 of 17 |
(In reply to analytical attempt at it by Vishal Gupta)

Total possible outcomes = 6^5                    yes

15 can be made with 6,6,3 or 6,5,4 or 5,5,5     yes

6,6,3 can be made in 130 ways.                      no

 

your approach is ok ,  just check the rest and COUNT THEM SLOWLY


  Posted by Ady TZIDON on 2010-11-15 18:43:40
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