A bag contains 11 cards numbered 1 through 11. A card is randomly chosen from the bag. What is the probability that the card has an odd number on it?

Answer 1

The definition of probability is: (number of successful events) / (total number of possible events)

"A card is randomly drawn" means that there is the same probability of drawing each of the 11 cards.

1 ... 2... 3 ... 4... 5 ...6 ...7... 8 ...9 ...10... 11

P(odd) = 6/11