Library›Logic & Lateral Puzzles›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaLogic subject

This reasoning concept notes that more items than containers force at least one container to hold multiple items.

Think it. Then flip it. ahamoraTap to reveal Back to the cue
Math & LogicOne small aha
Your new ahaThe Pigeonhole Principle

The Pigeonhole Principle: If there are more items than containers, one container must hold more than one. Source: Pigeonhole principle ↗

ahamoraReference ↗

Keep the thread going

One answer is a beginning.

Share a little curiosity, or follow it into the full collection.

Flip the full deck →

More from Logic & Lateral Puzzles

A few more worth knowing.

  1. 20These short verbal puzzles conceal an answer behind a double meaning or surprising description.RECALL
    Riddles

    Riddles pose questions with a clever hidden meaning and appear across cultures throughout history.

    Open this card ↗
  2. 21This broad term names short puzzles that test mental ingenuity, often through an unexpected trick.RECALL
    Brain Teasers

    Brain teasers demand unconventional creative thinking and are often used to test problem-solving in interviews.

    Open this card ↗
  3. 22This reasoning concept, a term coined by Edward de Bono, solves problems through indirect and creative reasoning.RECALL
    Lateral Thinking

    Lateral thinking, a term coined by Edward de Bono, solves problems through indirect and creative reasoning.

    Open this card ↗