MCQ
If A = {a, b, c},B = {c, d, e}, C{a, d, f}, then A × (B ∪ C) is:
  • A
    {(a, d),(a, e),(a, c)}
  • B
    {(a, d),(b, d),(c, d)}
  • C
    {(d, a),(d, b),(d, c)}
  • D
    none of these

Answer

  1. none of these

Solution:

A × (B ∪ C) = {a, b, c} × {a, c, d, e, f}.

The above set will consist of 15 ordered pairs and not 3.

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