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I have some 4 sided dice. I roll 5 of the dice. What is the probability that I roll exactly 2 '1's & exactly 2 '2's?

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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I have some 4 sided dice. I roll 5 of the dice.

What is the probability that I roll exactly 2 '1's & exactly 2 '2's?

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