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Let the set A is {1, 2, 3} and B is { 2, 3, 4}. Then number of elements in A ∩ B is?

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Let the set A is {1, 2, 3}  and B is { 2, 3, 4}. Then number of elements in A ∩ B is?

(a) 1

(b) 2

(c) 3

(d) 4

This question was addressed to me in semester exam.

The above asked question is from Set Operations in portion Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

1 Answer

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Best answer
Right choice is (b) 2

The best explanation: A ∩ B is {2, 3}.

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