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Algebra & Trigonometry with Analytic Geometry

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.5: The Binomial Theorem

Problem 16E

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Introduction to permutations and combinations
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Suppose we want to choose 2 letters, without replacement, from the 5 letters A, B, C, D, and E.
(a) How many ways can this be done, if the order of the choices is relevant?
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(b) How many ways can this be done, if the order of the choices is not relevant?
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