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X and Y 2 (Posted on 2019-01-28) Difficulty: 2 of 5
There is a land where every inhabitant is either of Type X or Type Y. One type always tells the truth, and one type always lies. You meet two inhabitants, A and B.

A:B is of Type X.
B:At least one of us is of Type Y.

Which type tells the truth, which type lies, and what are A and B?

No Solution Yet Submitted by Math Man    
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soln Comment 1 of 1
There are 8 possibilities to run through.

The only one that works is:

A is an X, B is a Y,  X's are liars, Y's are truth-tellers

  Posted by Steven Lord on 2019-01-28 07:55:44
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