alleryStart learning →Four numbers are written: 4, 9, 16 and 20. Three of them share a property. Which one does not?
A20
B16
C4
D9
Answer & Solution
Correct answer: A. 20
4, 9 and 16 are perfect squares (2x2, 3x3, 4x4), but 20 is not a square of any whole number.
Keep practising Odd one out, analogy and classification
Browse all Odd one out, analogy and classification questions for Olympiad (Class 5), or explore more Reasoning topics.
Related questions
Cube, square, sphere and cone are written on cards. Which one is NOT a solid shape?Find the odd pair out, where the second number is 3 times the first: (3, 9), (4, 12), (5, Three letter pairs follow a rule of skipping one letter between them. Which pair is the odFind the odd group of letters: ABC, DEF, GHI, JKM.How many numbers from 1 to 20 are multiples of 3?Which group has only vowels of the English alphabet?A whale lives in the sea but is not a fish. Why?Apple, orange and grape all belong to which category?