A special deck of 16 cards has 4 that are blue, 4 yellow, 4 green, and 4 red. The four cards of each color are numbered from one to four. A single card is drawn at random.
Answer the following: 1. Show the sample space of the following events
a. B: the card is blue b. R: the card is red c. N: the number in the card is at most 2