Question

One card is selected from a deck of playing cards. Determine the probability of selecting:


a card greater than 9 or a black card.

Answer 1

For 10, jack, queen, king, ace, there are 4 of each. Half of the cards are black, but two each of above 5 values above will also be black. Either-or probability is found by adding the individual probabilities.

20/52 + 26/52 - 10/52 = ?

Answer 2

36/52??