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Mensa IQ Deductive Reasoning Puzzles Flashcards

7 cards from real MENSA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Mensa IQ Deductive Reasoning Puzzles flashcards as text

  1. Five runners finish a race. Eve beat Dan. Dan beat Cal. Bea beat Eve. Al beat Bea. Who finished first?

    Answer: Al

    The order is Al, Bea, Eve, Dan, Cal, so Al finished first.

  2. All birds lay eggs. A platypus lays eggs. Can we conclude a platypus is a bird?

    Answer: No, the conclusion is invalid

    Laying eggs does not mean being a bird; affirming the predicate does not affirm the category.

  3. If some teachers are writers and all writers are creative, which must be true?

    Answer: Some teachers are creative

    The teacher-writers must be creative, so some teachers are creative.

  4. A clock shows 3:15. What is the angle between the hour and minute hands?

    Answer: 7.5 degrees

    At 3:15 the minute hand is at 90 degrees and the hour hand has moved to 97.5 degrees, a 7.5-degree gap.

  5. No liars are trustworthy. Some politicians are liars. Therefore:

    Answer: Some politicians are not trustworthy

    The politician-liars cannot be trustworthy, so some politicians are not trustworthy.

  6. Complete the sequence: 2, 6, 12, 20, 30, ?

    Answer: 42

    Differences grow by 4, 6, 8, 10, 12, so 30 + 12 = 42.

  7. If 'all that glitters is not gold' is taken literally, which is logically equivalent?

    Answer: Some glittering things are not gold

    The literal reading means it is not the case that everything glittering is gold, i.e., some glittering things are not gold.