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Suppose shirts of only three colours, namely, red, blue and green are available. Further, suppose Amar does not wear a red shirt. Akbar does not wear a green shirt and Anthony does not wear a blue shirt.

If Akbar and Anthony wear shirts of the same colour then which of the following is necessarily true?

  1. The colour of Amar’s shirt is not blue
  2. The colour of Amar’s shirt is definitely blue
  3. The colour of Amar’s shirt is not green
  4. None of the above is necessarily true

 

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