I saw the thread for statistical quote of the day and I thought it would be a good idea to start this one. I realize we get new questions everyday, but this thread can be used for problems that serve no purpose other than to be interesting/leisurely (if this makes any sense). I don't know how far this will go since posting questions and the solutions might become tedious. The questions can be trivial or challenging. Maybe it will become a thread for pondering. Let me know what you guys think.

Anyways, I found the following problem in Frederick Mosteller's

Anyways, I found the following problem in Frederick Mosteller's

*Fifty Challenging Problems in Probability with Solutions*: The Ballot Box- In an election, Henry and David have*h*and*d*votes respectively, h>d, for example 3 and 2. If ballots are randomly drawn and tallied, what is the chance that at least once after the first tally the candidates have the same number of tallies?
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