1. Show that an integer n is divisible by 2 if and only if its last digit is even. (Hint: For each i >1 in Eq. (1), 10' = 0 (mod 2). When ao is even, what is it congruent to modulo 2?)
1. Show that an integer n is divisible by 2 if and only if its last digit is even. (Hint: For each i >1 in Eq. (1), 10' = 0 (mod 2). When ao is even, what is it congruent to modulo 2?)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.5: Mathematical Induction
Problem 42E
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