I don't understand your question. Perhaps you can elaborate on the following:
What do you mean that we need to make 20 tosses to obtain the pattern HTHT? That pattern may occur after only 4 tosses, or it may not occur at all in 100 tosses.
Hi, given a pattern of result of tossing a coin ,how can one determine the number of tosses one needs to make to get that pattern?
to get pattern
HTHT we need to make 20 tosses.
Is Pascal's triangle of any help here?
The total possible outcomes of tossing a coin n times is 2^n ,so how can this