Proof of multinomial theorem.

Asked Sep 26 '13 at 02:34

Active Nov 01 '13 at 16:06

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I have this proof of multinomial theorem by induction from the Instructor's Solution Manual for Probability and Statistics, 3rd Ed. by DeGroot and Schervish (Addison Wesley/Pearson, 2002). The proof is this:

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I can't understand what is done after $(S.1.5)$.

Please please help.

Thank you.

edited Nov 01 '13 at 16:06

hardmath

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asked Sep 26 '13 at 02:34

Silent

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Proof of multinomial theorem.

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