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True / False / Not Given — the decision tree · ⁨Vrai / Faux / Non Donné — l'arbre de décision⁩

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A Thursday meeting does not itself exclude Monday

  • Original text A: “The club opened in 2018. Members meet on Thursdays.” The statement “Members also meet on Mondays” is NOT GIVEN: a Thursday meeting does not rule out another meeting. Original text B adds “Members meet only on Thursdays”; the Monday statement is now FALSE · ⁨FAUX⁩.
  • Both texts support “The club opened in 2018”. Neither describes who most members are, so “Most members are students” remains NOT GIVEN. One small qualifier changes the evidence; a club timetable cannot produce a membership census by magic.
Adding only changes a Monday claim from missing evidence to contradiction

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IGCSE, A-Level & AP