Let A = {x, a, b, c, d}. (a) How many closed binary operations f on A
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(a) How many closed binary operations f on A satisfy f(a, b) = c?
(b) How many of the functions f in part (a) have x as an identity?
(c) How many of the functions f in part (a) have an identity?
(d) How many of the functions f in part (c) are commutative?
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a 5 24 b 5 15 c ...View the full answer
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Related Book For
Discrete and Combinatorial Mathematics An Applied Introduction
ISBN: 978-0201726343
5th edition
Authors: Ralph P. Grimaldi
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