← CAT 2018 Slot 2 QA

CAT 2018 Slot 2 QA · Question 31

For two sets A and B, let AΔB denote the set of elements which belong to A or B but not both. If P = {1,2,3,4}, Q = {2,3,5,6,}, R = {1,3,7,8,9}, S = {2,4,9,10}, then the number of elements in (PΔQ)Δ(RΔS) is

  1. A.
    7
  2. B.
    8
  3. C.
    9
  4. D.
    6

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