Question

Two cards are drawn from a standard deck of cards. Find each probability.
1. P(both jacks or both face cards)
2. P(both either black or an ace)

Answer 1

both jacks is a subset of both facecards, so the first one means P(both face cards)
there are 12 face cards in a deck, so probability you get two of them is
\[\frac{12}{52}\times \frac{11}{51}\]

Answer 2

second is
\[\frac{28}{52}\times \frac{27}{51}\]

Answer 3

there are 26 black cards and two aces that are not black. that explains the 28

Answer 4

the key ;
1) 11/221
2) 63/221

Answer 5

got a calculator?

Answer 6

ok, your answer is correct , ty

Answer 7

They are equivalent.