Classification (Odd One Out) Quiz: Reasoning Practice
10 timed odd-one-out questions. Words, numbers, number pairs and letter groups. With the common property of the other three explained for each.
Classification (Odd One Out) Quiz: Reasoning Practice
Tip: use keys 1-4 to answer, Enter for next.
Answers to the starter quiz
Spoilers! These are the Starter quiz’s answers. Easy, Medium, Hard and Mixed rounds show their own answers when you finish.
Find the odd one out: Mercury, Venus, Moon, Mars
- Mercury
- Venus
- Moon
- Mars
Answer: Moon. Mercury, Venus and Mars are planets; the Moon is a natural satellite of the Earth.
Find the odd number: 17, 23, 29, 33
- 17
- 23
- 29
- 33
Answer: 33. 17, 23 and 29 are prime numbers; 33 = 3 × 11, so it is composite.
Lion, Tiger and Leopard belong to one group. Which of these also belongs to it?
- Cheetah
- Wolf
- Hyena
- Bear
Answer: Cheetah. Lion, tiger and leopard are members of the cat family (Felidae), and so is the cheetah. The wolf is a dog-family animal and the hyena and bear belong to other families.
Find the odd pair: 3 : 9, 5 : 25, 7 : 49, 8 : 56
- 3 : 9
- 8 : 56
- 5 : 25
- 7 : 49
Answer: 8 : 56. In the other pairs the second number is the square of the first. 8² is 64, not 56.
Find the odd letter group: BDF, HJL, MOQ, RUW
- BDF
- HJL
- MOQ
- RUW
Answer: RUW. BDF, HJL and MOQ each move +2, +2. RUW moves +3 (R→U) and then +2, so it breaks the pattern.
Find the odd one out: DH, LP, QU, TY
- DH
- LP
- TY
- QU
Answer: TY. D(4)→H(8), L(12)→P(16) and Q(17)→U(21) all have a gap of 4. T(20)→Y(25) has a gap of 5.
Find the odd one out: Violin, Sitar, Guitar, Flute
- Violin
- Flute
- Sitar
- Guitar
Answer: Flute. Violin, sitar and guitar are string instruments; the flute is a wind instrument.
Find the odd one out: Tibia, Femur, Radius, Biceps
- Biceps
- Tibia
- Femur
- Radius
Answer: Biceps. Tibia, femur and radius are bones; the biceps is a muscle.
Find the odd one out: Patna, Lucknow, Bhopal, Kanpur
- Patna
- Lucknow
- Bhopal
- Kanpur
Answer: Kanpur. Patna (Bihar), Lucknow (Uttar Pradesh) and Bhopal (Madhya Pradesh) are state capitals. Kanpur is a large city but not a capital.
Find the odd number: 132, 253, 374, 485
- 132
- 253
- 485
- 374
Answer: 485. In 132, 253 and 374 the middle digit equals the sum of the outer digits (1+2=3, 2+3=5, 3+4=7). In 485, 4 + 5 = 9, not 8.
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