A card is drawn from a standard deck.  Find the probability of drawing a king or a heart. 

Whatis P(A∪B) if P(A) = 0.55, P(B) = 0.35 and P(A∩B) = 0.15?

Two fair dice are rolled. What is the probability that the outcome on the first die is 6 or the outcome on the second die is 5?

MarikinaVeterinary Office shelters cats and dogs. 32% of the current inhabitants are cats and 49% are dogs. What is the probability that an animal chosen in random is either a cat or a dog?

There are 30 students in a Statistics class, and they all have at least one pencil or pen. 14 students have pencils, 19 students have pens. What is the probability that a student chosen in random from the class has both pencil and pen?