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back to boardtask is improper I cannot understand how much probability. If probability equal 1, answer in infinity. Edited by author 09.03.2009 09:02 Re: task is improper You don't have the right to call the problem improper only because you don't understand it!!! Maybe read the statement more carefully and find out what is the expected time in mathematics. Re: task is improper I think I understend task well and how decide it if we don't think about probability. If we have {2,"ba"} I find the solve is 4.6(6). But monkey can push "bbbbbb" with probability>0. You can answer me to allaksus@rambler.ru . Re: task is improper Posted by Al.Cash 13 Mar 2009 21:12 Actually the probability of typing "bbbbbb..." (infinity times) is 0 although this can happen! And the answer to {2,"ba"} is exactly 4. Re: task is improper Sorry, I agree with you =4 (I found one error), but the probability this event is 0.6875 . Why it isn't 0.999 or 0.99999.
Re: task is improper If I will be audietorium I will be intrest how many maximum time I must wait with probability 0.99 Re: task is improper Posted by Al.Cash 14 Mar 2009 00:47 You mustn't find the maximum time but the EXPECTED time, which is equal to 1*P(1) + 2*P(2) + 3*P(3) + 4*P(4) + ... P(i) is the probability of the situation, where the first appearance of the required word ends at position i. I don't know how to explain it more clearly. No subject Posted by Al.Cash 14 Mar 2009 00:47 Edited by author 14.03.2009 01:42 Re: No subject The task doesn't say about condition (EXPECTED time, maximum time, ...) . |
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