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

MATHEMATICS
WAEC 1991

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)

Correct Answer: B. ?

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