Two identical pack of cards A and B are shuffled throughly. One card is picked from A and shuffled with B. The top card from pack A is turned up.
If this is the Queen of Hearts, what are the chances that the top card in B will be the King of Hearts?
(In reply to re(2): Solution
Maybe, but it does not say that, remember that pack A was already shuffled, so the chances of the king of hearts being on top of the queen of hearts is very slim.