8. There are 10 ways of choosing the seven envelopes into which the red cards will be placed. There 3 ways of choosing exactly j red envelopes and 7 - į green envelopes. Therefore, the are probability that exactly j red envelopes will contain red cards is

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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10
ways of choosing the seven envelopes into which the red cards will be placed. There
8. There are
7
ways of choosing exactly j red envelopes and 7 – j green envelopes. Therefore, the
are
probability that exactly j red envelopes will contain red cards is
Transcribed Image Text:10 ways of choosing the seven envelopes into which the red cards will be placed. There 8. There are 7 ways of choosing exactly j red envelopes and 7 – j green envelopes. Therefore, the are probability that exactly j red envelopes will contain red cards is
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