Which is the odd one out?
- A.4
- B.9
- C.16
- D.20 ✓
Explanation: 4, 9, and 16 are perfect squares; 20 is not.
Class 6 IMO Mathematics Olympiad practice · Patterns & Sequences · Odd-One-Out & Classification
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Class 6 IMO Mathematics Olympiad practice · Patterns & Sequences · Odd-One-Out & Classification
← All Odd-One-Out & Classification questions