R and S are two sets such that n(R)=7 and R `cap` S`nephi` Further n(S – InterviewSolution

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1.	R and S are two sets such that n(R)=7 and R `cap` S`nephi` Further n(S)=6 and S `DeltaR`. The greatest. Possible value of `n(R DeltaS)` is____A. 11B. 12C. 13D. 10
Answer» Correct Answer - A (i) Recall all the concept of symmetrical difference. (ii) For the greatest possible value of `n(RDeltaS)` `n(RcapS)` is minimum. (iii) As `R capSnephi,n(RcapS)=1`. (iv) `n(R DeltaS)=n(R cupS)-n(RcapS)`.

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