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QLDPhilosophy and ReasonQuick questions
Unit 3: Reason and formal logic
Quick questions on Necessary and sufficient conditions: QCE Philosophy and Reason
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is mapping conditions onto the conditional?Show answer
The conditional "if P then Q" captures both ideas, read in opposite directions:
What is q1?Show answer
Define necessary and sufficient conditions and give one example of each. [3 marks]
What is q2?Show answer
Rewrite "You can vote only if you are enrolled" as a conditional and state which condition is necessary. [2 marks]
What is q3?Show answer
Give the contrapositive of "if it rains then the match is cancelled" and explain why it is equivalent. [3 marks]
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