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Critical-thinking logic challenges

Explain how you would solve unfamiliar situations by deciding what to observe, test or infer. These are written reasoning challenges, not subject-revision questions.

What it tests
Constraint reasoning, deduction, information strategy, evidence evaluation and decision-making.
How the result is used
Learning only. This response is not shown to organisations and is not used for matching.

Challenge 1 of 6: Experimental reasoning

Question preview

Challenge 1

Three switches are outside a closed room. Exactly one switch controls an incandescent bulb inside. All switches start off, and you may enter the room only once. Which plan lets you identify the correct switch?

Critical-thinking logic challenges | Sduella