A red ball and 19 white balls are in a box. If two balls are drawn, without replacement, what is the probability of getting a red R ball on the first draw and a white W ball on the second? Pr(R first n W second) = 20 Pr(R first W second) = 18 Pr(R first w second) = 20 9 Pr(R first w second) = 20 Pr(R first W second) = 1

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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A red ball and 19 white balls are in a box. If two balls are drawn, without replacement, what is the
probability of getting a red R ball on the first draw and a white W ball on the second?
Pr(R first
Pr(R first
w second) = 20
W second) = 13
18
19
Pr(R first W second) = 20
9
Pr(R first W second) = 20
Pr(R first W second) = 1
Transcribed Image Text:A red ball and 19 white balls are in a box. If two balls are drawn, without replacement, what is the probability of getting a red R ball on the first draw and a white W ball on the second? Pr(R first Pr(R first w second) = 20 W second) = 13 18 19 Pr(R first W second) = 20 9 Pr(R first W second) = 20 Pr(R first W second) = 1
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