There is a standard 52-card deck of cards (e.g., https://en.wikipedia.org/wiki/Standard_52- card_deck ). There is a total of 52 cards, e.g., no extra joker cards. In each event, you shuffle the deck of cards randomly, pick a card, and observe the suit and the rank. Now suppose the face cards (the jack's, queen's, and king's) are considered the same as 10's. That is, jack's, queen's, and king's are effectively the same as 10's. What is the information entropy for one event?