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 you only consider the suit in the card-picking event (i.e., rank gets ignored and does not matter). What is the information entropy for one event?