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 Jun 25 accepted Probability of Drawing Balls from Infinite Bag Jun 25 comment Probability of Drawing Balls from Infinite Bag @Andre, That solved it, if you want to write up a brief answer, I'll check it as the solution... Jun 25 comment Probability of Drawing Balls from Infinite Bag Great. Thats it, Cheers. Jun 25 asked Probability of Drawing Balls from Infinite Bag Apr 18 awarded Popular Question Sep 24 awarded Autobiographer May 29 comment Check whether a point is within a 3D Triangle How can you have a 3D plane, planes are 2D? Aug 8 awarded Student Aug 6 awarded Scholar Aug 6 accepted Number of Combinations from 1 to 100 Aug 6 comment Number of Combinations from 1 to 100 OMG. That is just ridiculously easy when you present it like that. Thanks. Aug 6 comment Number of Combinations from 1 to 100 Consider this, say I want to create a chemical mixture of 5 constituents (ie I mix together 5 different chemicals) for some sort testing. How many experiments am I required to to run, to cover all mixtures, if I am to create a grid with a concentration step (for each constituent) of 0.5%, noting that in each experiment, A + B + C + D + E = 100% Aug 6 awarded Commentator Aug 6 comment Number of Combinations from 1 to 100 Yes, and for example (1,99) != (99,1), the case of 2 sets is rather trivial (can do it by hand), but when there are 5 or more sets... Aug 6 comment Number of Combinations from 1 to 100 @Omnitic, not subsets, pairs. But I seek to generalize for more than 3 sets, and, where the increment is smaller (say if the set is: 0, 0.5, 1, 1.5, ... 100) Aug 6 comment Number of Combinations from 1 to 100 Yes they are different. Aug 6 comment Number of Combinations from 1 to 100 Probably something like the total number of combinations, multiplied by a coefficient representing 1 - the probability of exceeding the limit. Aug 6 asked Number of Combinations from 1 to 100 May 27 awarded Supporter May 20 comment What is $-i$ exactly? Yeah but it means that the reputation 'always goes up'. I wonder if we will see a reputation bubble....