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thank you very much. never would have solved it on my own.
ok so now have a new problem if you'll bare with me - what the probability of getting at least 3 positive results?
sorry to be a pest but that just isn't working out for me.
the fraction I get it 20/729. I'm assuming the first brackets is a fraction (which is where Imust be going wrong) and not something I vaguely remember from school. If so what is it so I can look it up.
But yes this appears to be the formula I want.
thanks for help
edit - ok yup I now remember matrices but still working on how that gets to a fraction
edot - figured it out - thanks very much
Thanks for that, but 2 things
1 just to make sure this is 3 positive results from 5 dice
2 its the formula I wanted as the example is just hypothetical.
cheers
thanks. You have five dice. both a 5 or a 6 gives a positive result. I want 3 positive results.
what is the probability of geting a desired result from a number of attempts.
An example would be 3 x a result of 5 or 6 when you roll 5 dice. So you roll 5 dice and you want to get 3 results of 5 or 6.
Hope I made that clear.
Danny
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