what is the expected number of cards not drawn what is the expected number of unseen cards when drawing $2n$ cards? how do you get the expected number of unseen cards how to find expected number of unseen cards on cards drawing at random what is expected numbers of unseen cards drawn from a deck what is expected number of cards never drawn how to calculate the expected number of cards drawn from a deck of $2n$ how to find the expected number of unseen cards when drawing from a deck of cards of n$ what is the expected number of cards not drawn how do you know the expected number of cards not chosen after a $2n$ card drawing how to calculate expected number of unseen cards how do you find the expected number of cards seen how many cards have we not seen in a deck of $20 cards what is the expected number of unnoticed cards how do we get the expected number of cards when we draw $2n dollars from a deck of cards? how do you tell the expected number of unseen cards how to calculate the expected number of cards not seen after a random draw? what is expected number of unknown cards in card drawing how many cards have we not seen in a deck when drawing what is expected number of unseen cards for $2n$ deck