Which colour cards are there in a deck of playing cards?
Can you list all the possible outcomes ?
What are the favourable outcomes of this event?
What is P(E) + P(not E) = ?
What do you recall about the theoritical probabilty?
What are the total number of outcomes of this experiment?
What is the range of probability?
What does the word elementary remind you of ?
What are the total number of outcomes of this experiment?