A) 100
B) 200
C) 300
D) 400
Correct Answer: C
Solution :
[c] Given that, \[n\,(U)=700,\]\[n\,(A)=200,\]\[n\,(B)=300\] and \[n\,(A\cap B)=100\] We know that, \[n\,(A\cup B)=n\,(A)+n\,(B)-n\,(A\cap B)\] \[=200+300-100=400\] Now, \[n\,(A'\cap B')=n\,(U)-n\,(A\cup B)\] \[=700-400=300\] |
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