Dave as I told you maybe again all the results turn out 'T' or 'H'
(I mean all the random numbers turn out grater than 1/3 then in output we have only 'T')
IMO,this question has some problem.
in the example original poster told us we cant have 1/3 for p(head) at all.
I cant understand this here!!!the question needs more explanations.

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Mehdi.:)