Let R1 and R2 be the “congruent modulo 3” and the
Chapter 12, Problem 41E(choose chapter or problem)
Problem 41E
Let R1 and R2 be the “congruent modulo 3” and the “congruent modulo 4” relations, respectively, on the set of integers. That is, R1 = {(a, b) | a ≡ b (mod 3)} and R2 = {(a, b) | a ≡ b (mod 4)}. Find
a) R1 ⋃ R2.
b) R1 ⋂ R2.
c) R1 – R2.
d) R2 – R1.
e) R1 ⊕ R2.
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