if n(A)=11, n(B)=9, n(A Intersection B)=5, n(A Union B)=? A) 15 B) 20 C) 10 D) 23
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1
Answer:
A(UB)=n(A)+n(B)-n(A intersection B)
=11+9-5
=15
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Answer: question samaj nahi aaya
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