Odd One Out: 18 Rounds to Test Lateral Thinking

Odd one out is the round where the quiet table finally scores. It rewards spotting a category rather than remembering a fact, which is a different skill and often lives in different people.

Set one

1. Mercury, Venus, Ceres, Mars — Ceres — it is a dwarf planet, the others are planets
2. Trumpet, trombone, flute, tuba — Flute — it is woodwind, the others are brass
3. Spain, Portugal, Morocco, France — Morocco — the only one not in Europe
4. Whale, dolphin, shark, seal — Shark — the only fish, the others are mammals
5. Cairo, Nairobi, Lima, Rabat — Lima — the only one not in Africa
6. Gold, silver, iron, diamond — Diamond — not a metal

Set two

1. Arabic, Hebrew, Turkish, Aramaic — Turkish — the others are Semitic languages
2. Square, triangle, cube, circle — Cube — the only three-dimensional shape
3. Nile, Amazon, Sahara, Danube — Sahara — a desert, the others are rivers
4. Beethoven, Mozart, Picasso, Bach — Picasso — a painter, the others composers
5. Jupiter, Saturn, Neptune, Pluto — Pluto — no longer classified as a planet
6. Copper, bronze, brass, steel — Copper — an element, the others are alloys

Set three

1. Pacific, Atlantic, Mediterranean, Indian — Mediterranean — a sea, the others oceans
2. Lion, tiger, leopard, wolf — Wolf — not a big cat
3. January, March, June, July — June — the only one with 30 days
4. Everest, K2, Kilimanjaro, Denali — Kilimanjaro — the only one not in a mountain range
5. Spider, ant, bee, beetle — Spider — eight legs, the others are insects
6. Rome, Athens, Cairo, Paris — Cairo — the only one not in Europe

Always read the reasoning aloud when you give the answer. Half the enjoyment of this round is the moment a table realises the connection they missed.