Consider a standard deck of 52 playing cards. Each part of 19 and 20 is worth 3 points, while 21 is worth 10 points.
19. (a) How many three-card hands are possible?
(b) How many three-card hands consisting only of face cards (jack, queen, king) are possible?
20. (a) How many five-card hands consisting entirely of hearts are possible?
(b) How many three-card hands consisting only of face cards (jack, queen, king) are possible?
19. a.) The 3 card hands possible out of 52 cards is 52C3 = 22100
b.) No. of face cards in a standard deck of 52 cards is 12 (4 jacks, 4 queens and 4 kings)
Then no. of 3 card hands that consist only of face cards = 12C3 = 220
20. a.) There are 13 hearts in a standard deck of 52 cards, so the number of 5 card hands consisting entirely of hearts = 13C5 = 1287
b.) There are 12 face cards in a standard deck, so the number of 3 card hands consisting only of face cards = 12C3 =220
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