Syllogisms and Logical Reasoning Practice

Free · no sign-up · unlimited new questions

A syllogism consists of statements such as "All doctors are graduates" and "No graduate is uneducated". You decide which conclusion necessarily follows — based only on the statements, not on your general knowledge. From the medium level up, a logic solver checks every question so that there is always exactly one correct answer.

Practice syllogisms now › Mensa simulation

How it works

Easy: does a conclusion follow from the statements — yes or no?
Medium: three statements, and you pick the only valid conclusion from several options.
Hard: four statements and longer chains of reasoning.

Sample question

Given: • No chefs are curious. • No historians are curious.

Conclusion: "All chefs are historians."

Is this conclusion logically valid?

Yes, the conclusion is valid
No, the conclusion is invalid

Show solution

No, the conclusion is invalid — Fallacy — the premises do not support the conclusion

Solve this question in the app ›

Tips

Draw small circles (sets) and check how they overlap.
"Some" means at least one — not "not all".
Ignore whether a sentence is true in real life. All that counts is what follows logically.

Relevance for IQ and Mensa tests

Logical reasoning is tested in many intelligence and aptitude tests, often in exactly this form.

Frequently asked questions

Which languages are the syllogisms available in?

English and German.

Can there be more than one correct answer?

No. From the medium level up, every question is checked by a logic solver, so exactly one conclusion is valid.

Start training ›