Study guides › Level 9 · If–Then

What cannot be true?

Level 9 · for questions like “There are some blims, some glorps and some zats. All blims are glorps. No glorps are zats. Which cannot be true?”

💡 The idea

A statement cannot be true if no drawing that fits the facts shows it.

🪜 The steps

1. Draw circles for the made-up words, as the facts say.
2. For each choice, try to draw it while keeping the facts.
3. Every group has members, so no circle is empty.
4. The one you can’t draw is the answer.

⚠️ Watch out

• A choice that is true in even one drawing could be true: it’s not the answer.

🎯 Try these

1. All wugs are tavs. No tavs are mivs. Can some wugs be mivs?

Answers: 1) No: that cannot be true

This guide is also in the 10LogicQ app: tap “📖 Study guide” after a puzzle.