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COMEDK2014MathematicsSets and Relations

If A= 1,2,3,4 , then which one of the following is reflexive?

Options

  1. A(1,1),(2,3),(3,3)
  2. B(1,1),(2,2),(3,3),(4,4)
  3. C(1,2),(2,1)(3,2),(2,3)
  4. D(1,2),(1,3),(1,4)

Correct answer

B. (1,1),(2,2),(3,3),(4,4)

Step-by-step solution

Given, A=[1,2,3,4] Let R be a reflexive relation on A , then for each x A,(a, a) R Option (b) is true.

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