How many arrangements of the letters in CHEMIST have H before E, or E before T, or

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How many arrangements of the letters in CHEMIST have H before E, or E before T, or T before M? (Here "before" means anywhere before, not just immediately before.)

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Discrete and Combinatorial Mathematics An Applied Introduction

ISBN: 978-0201726343

5th edition

Authors: Ralph P. Grimaldi

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Question Posted: Jun 21, 2016 08:13 AM

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How many arrangements of the letters in CHEMIST have H before E, or E before T, or

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Discrete and Combinatorial Mathematics An Applied Introduction

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