2. Find the integer a such that a = 2*(mod31) and -16 < a< 15. а) 16 b) -16 с) -15 d) 15 e) 8

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 30E: 30. Prove that any positive integer is congruent to its units digit modulo .
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2. Find the integer a such that a = 2*(mod31) and –16 < a < 15.
a) 16
b) -16
c) -15
d) 15
e) 8
Transcribed Image Text:2. Find the integer a such that a = 2*(mod31) and –16 < a < 15. a) 16 b) -16 c) -15 d) 15 e) 8
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