For any finite set S, 0 S 0 denotes the number of elements
Chapter 4, Problem 68(choose chapter or problem)
For any finite set S, 0 S 0 denotes the number of elements in S. If 0 A 0 = 3 and 0 B 0 = 4, find a. 0 A B 0 b. 0 A2 0 c. 0 B2 0 d. the maximum possible value for 0 A d B 0 e. the minimum possible value for 0 A c B
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