Answer
$\frac{1}{13}$
Work Step by Step
In a standard deck, there are 52 cards, out of which half - 26 - are black.
There are two possibilities for a black four, 4 of clubs and 4 of spades.
P(4 | Black) = 2/26 = 1/13
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 11 - Probability and Statistics - 11-4 Conditional Probability - Lesson Check - Page 700: 2
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