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For two sets C and D the set (C – D) ∩ D will be __________

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For two sets C and D the set (C – D) ∩ D will be __________

(a) C

(b) D

(c) Φ

(d) None of the mentioned

I had been asked this question during an interview.

My question is taken from Algebraic Laws on Sets in section Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

1 Answer

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Best answer
Right option is (c) Φ

Easiest explanation: C-D ≡ C ∩ D’, D ∩ D’ ≡ Φ.

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