SOLUTION: A card is selected at random from a standard deck of 52 cards. Find the probability of choosing a spade or a 3 card.
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Question 941175: A card is selected at random from a standard deck of 52 cards. Find the probability of choosing a spade or a 3 card. Answer by Rizz Rizz(1) (Show Source):
You can put this solution on YOUR website! Solution:
Let A= Spade Card
B= 3 Card
Then,
P(A)= 13/52 (there are 13 "spade cards")
P(B)= 4/52 (there are 4 "3 cards")
P(A∩B)= 1/52 ("spade" and "3" cards)
Hence, P(AUB)= P(A)+ P(B)- P(A∩B)
=13/52+ 4/52- 1/52
=16/52
=0.3076
