| sgrtretregudgnfiudhg |
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Can you solve this probability problem Letsrun? You have 4 questions, each worth 6 points (and you can get from 0 to 6 on these). How many different ways can you get 20 points? |
| yagtash |
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6 6 6 2 6 6 2 6 6 2 6 6 2 6 6 6 6 6 5 3 6 5 6 3 5 6 6 3 6 6 3 5 6 5 3 6 5 6 3 6 6 3 6 5 6 3 5 6 5 3 6 6 3 6 6 5 3 6 5 6 3 5 6 6 6 6 4 4 6 4 6 4 4 6 6 4 6 5 5 4 5 6 5 4 5 5 6 4 6 4 4 6 4 6 4 6 5 5 4 6 5 fvck this im bored. |
| gromes |
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I did it with generating functions... and got 1372. Solved it pretty quickly (read: haphazardly) but I believe this is correct. |
| fiftypence |
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The answer is 7 choose 3 I believe (You have to split 4 missed points over 4 problems. That is 4 multichoose 4 which reduces to 7 multichoose 3) So 7!/(3!4!)=7*6*5/(3!)=7*5=35 More brute force Miss all on one question=4 ways Miss 3 on one, 1 on one=12 ways Miss 2 on one, 1 on two others=12 ways Miss 2 on 2 of them=6 ways Miss 1 on all four =1 way =35 BTW this is combinatorics not probability. |
| sdlmsdkl |
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Shit I thought it was 6 questions, 6 points each and 20 points total, which was way too hard for me to figure out |
| gromes |
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apparently, I cannot do algebra... But 35 is correct |