TMUA-P2-ERR2-006 — Paper P2 · Common fallacies · Level 2

Options

1. A
   The website committed the converse error: from “boarding implies ticket” it treated “ticket implies boarding”, confusing a necessary condition for a sufficient one.
2. B
   The website used the contrapositive correctly.
3. C
   A necessary condition is always sufficient, so the customer is at fault.
4. D
   The website denied the antecedent correctly.
5. E
   No fallacy occurred; tickets guarantee boarding.

Letters only — the answer key is hidden. Work it out, then check the solution below.

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