Question: (1) Let U = {1, 2, 3, . . . , 9, 10} be the universal set. Let A = {x U : x 1

(1) Let U = {1, 2, 3, . . . , 9, 10} be the universal set. Let A = {x U : x 1 (mod 3)} and B = {x U : x 2 (mod 5)}.

Identify the following sets and compute their cardinality.

(a) A (b) A B (c) A B (d) A B (e) A B

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