The number of items in Set A is 40; set B is 32; set C is 50; in both A and B is 4; in both A and C is 5; in both B and C is 7; and in all is 2. How many are in only one set?
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5
Answer:
Let A = {1, 2, 3, 4, 5, 6} and B = {2, 4, 6, 8}.
What is the cardinality of B? A ⋃ B, A ⋂ B?
The cardinality of B is 4, since there are 4 elements in the set.
The cardinality of A ⋃ B is 7, since A ⋃ B = {1, 2, 3, 4, 5, 6, 8}, which contains 7 elements.
The cardinality of A ⋂ B is 3, since A ⋂ B = {2, 4, 6}, which contains 3 elements.
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Answered by
1
Answer:
the answer is option (d) 84.
because n(A+B+C) = 29+19+36
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