Free category · verified explanations after every question
Deduction questions ask what must be true given the premises — syllogisms, conditional chains and quantifier logic. The answer is what the premises force, never merely what they make possible.
Next step
Choose how you want to practise.
Start guided for explanations after every answer, or skip ahead to the checkpoint.
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Guided practice
10 questions, unseen-first, with the answer explained after each one.
Checkpoint
10 randomised questions, scored at the end. Take it any time — pass 8/10 and this category is done.
How to think about it
Ask what must follow, not what could be true.
Use the contrapositive: 'if P then Q' also gives you 'if not Q then not P'.
Draw quantifier statements ('all', 'some', 'none') as overlapping sets.
For ordering relations, lay the items on a line and read off what is fixed.
The most common trap
The converse error — reading 'if P then Q' as 'if Q then P'.