What is the probability of drawing a red card from a single deck of cards?
Step one is to determine the number of red cards in a single deck. Because the number of red cards in a single deck is 26, N(A) = 26. Step two is to determine the total number of cards in a single deck. Because the total number of cards in a single deck is 52, s = 52. Step three is to divide N(A) by s, so Pr(A) = N(A)/s = 26/52 = 0.5 Therefore, the probability of drawing a red card from a single deck is 0.5. This mean s there is a 50% chance of drawing a red card from a single deck of cards.
