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Question
Verify if the following proposition is a Tautology, Contradiction or Contingency using a truth table.
((A=>B)∧(B=>C))=>(A=>C)
Solution
| A | B | C | A→B | B→C | (A→B)∧(B→C) | A→C | ((A→B∧(B→C))→(A→C) |
| 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
| 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
| 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 |
| 1 | 1 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
It is a Contingency.
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