Answer to Question #21097 in Combinatorics | Number Theory for Akash
How many cards must you pick up from a standard 52 card deck to be sure of getting
at least one red card.
You have to take all black cards + 1 card to be 100% sure,that there will be at least 1 red card.
So that is 52/2 +1 = 28
Thus, you have to take 28 cards