A pack of playing cards contains 52 cards, 13 belonging to each of the four suites "Spades", "Hearts", "Diamonds" and "Clubs". Within each suite the 13 cards are labelled: Ace, 2, . . . , 10, Jack, Queen, King. Let D be the event that a randomly selected card is a diamond, and K be the event that the card is a king, and B be the event that the card has one of the numbers from 2 to 10. Find Pr(D), Pr(K), Pr(B), Pr(D K), Pr(B D), Pr(B K) and Pr(D K B).