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The set difference of the set A with null set is __________

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The set difference of the set A with null set is __________

(a) A

(b) null

(c) U

(d) B

I got this question in an international level competition.

I need to ask this question from Set Operations topic in division Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

1 Answer

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Best answer
Right answer is (a) A

Best explanation: The set difference of the set A by the null set denoted by A – {null} is A.

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