Unit 12 · Multi-Step Conditional Reasoning
School Play — Find the Impossible Outcome
Lesson 22 of 30
About this lesson
A school play has three conditional rules: ticket sales determine whether it goes ahead, working hard determines whether it succeeds, and success determines whether there will ever be a next play. Which outcome is logically impossible?
Chapters
Question
If we don’t sell three quarters of the tickets then the school play will be cancelled.
If the play goes ahead and we make it a success, then we might just be able to convince the principal to let us put on another play next summer. It won’t be a success, though, if people don’t work hard and learn their lines.
If the play is not a success, then it will be the last play we are allowed to do.
Which one of the following outcomes is not possible?
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