Let P be the statement: "For all k, n e Z* with n > 1, if k is even, then (n – 1)* = 1 (mod n)." (a) Is P true? Prove your answer. (b) Write out the converse of P. Is the converse of P true? Prove your answer. (c) Write out the contrapositive of P. Is the contrapositive of P true? Explain.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.5: Congruence Of Integers
Problem 37E
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Let P be the statement: "For all k, n e Z* with n > 1, if k is even, then (n – 1)* = 1 (mod n)."
(a) Is P true? Prove your answer.
(b) Write out the converse of P. Is the converse of P true? Prove your answer.
(c) Write out the contrapositive of P. Is the contrapositive of P true? Explain.
(d) Write out the negation of P. Is the negation of P true? Explain.
Transcribed Image Text:Let P be the statement: "For all k, n e Z* with n > 1, if k is even, then (n – 1)* = 1 (mod n)." (a) Is P true? Prove your answer. (b) Write out the converse of P. Is the converse of P true? Prove your answer. (c) Write out the contrapositive of P. Is the contrapositive of P true? Explain. (d) Write out the negation of P. Is the negation of P true? Explain.
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