Grant, Neal and Kyle just finished their lunch. One of the boys had a ham sandwich, another a turkey sandwich and the third, a chicken sandwich.
If only one of the following four statements is true, who had what for lunch?
1. Kyle had the turkey sandwich.
2. Neal did not have a chicken sandwich.
3. Kyle did not have a chicken sandwich.
4. Neal did not have the ham sandwich.
2 and 4 can't both be false; one of them must be the true statement.
Therefore 3 must be false and Kyle had the chicken sandwich. That makes statement 2 false, so statement 4 is the true one, so Neal must have had turkey, leaving Grant to have the ham.
But that makes statement 2 true also. Something must be wrong.
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Posted by Charlie
on 2024-09-09 08:13:58 |
some thoughts
