P = {2, 1,3, 9, 1/2}; Q = {1,21/2,3, 7} and R = {5, 4, 21/2}. Find P∩Q∩R

  • A (21/2)
  • B ∅
  • C (1, 3, 7)
  • D (4)
  • E (5,7,9)
waec 1991mathematics

The correct answer is B. ∅

No explanation given
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