Mensa IQ Odd One Out Puzzles Flashcards
6 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 6 Mensa IQ Odd One Out Puzzles flashcards as text
Which number is the odd one out: 12, 24, 36, 49, 60, 72?
Answer: 49
12, 24, 36, 60, and 72 are all multiples of 12 (or at least multiples of 6 that fit the pattern). 49 = 7² is not divisible by any of the common factors. All others are divisible by 12 except 49.
Which does NOT belong: Mars, Jupiter, Saturn, Sun, Neptune?
Answer: Sun
Mars, Jupiter, Saturn, and Neptune are all planets in our solar system. The Sun is a star, not a planet. It's the central body that the planets orbit around.
Which number does NOT fit the pattern: 2, 4, 8, 16, 33, 64?
Answer: 33
The sequence 2, 4, 8, 16, 64 consists of powers of 2 (2¹, 2², 2³, 2⁴, 2⁶). 33 is not a power of 2. The expected value at that position would be 32 (2⁵).
Which figure is the odd one out: equilateral triangle, square, regular pentagon, regular hexagon, scalene triangle?
Answer: Scalene triangle
An equilateral triangle, square, regular pentagon, and regular hexagon are all regular polygons (equal sides and angles). A scalene triangle has unequal sides, making it irregular.
Which number does NOT belong: 3, 6, 9, 12, 14, 15, 18?
Answer: 14
3, 6, 9, 12, 15, and 18 are all multiples of 3. 14 is not divisible by 3 (14 ÷ 3 = 4.67), making it the odd one out.
Which is the odd one out: piano, violin, guitar, trumpet, cello?
Answer: Trumpet
Piano, violin, guitar, and cello all produce sound through vibrating strings (stringed instruments). A trumpet is a brass wind instrument that produces sound through vibrating lips and air columns.