Question

If A, B and C are any three sets, then A – (B ∪ C) is equal to _____________

(a) (A – B) ∪ (A – C)

(b) (A – B) ∪ C

(c) (A – B) ∩ (A – C)

(d) (A – B) ∩ C

I have been asked this question in semester exam.

The above asked question is from Relations in chapter Compiler Introduction of Compiler

Answer 1

The correct choice is (c) (A – B) ∩ (A – C)

For explanation I would say: it is De’ Morgan law.