A student writes all numbers from 1 to 30. How many times does the digit 2 appear?
- A.12
- B.13 ✓
- C.14
- D.15
Explanation: The digit 2 appears in the units place in 2, 12, 22 (3 times) and in the tens place in 20-29 (10 times). Total: 3+10=13.
Class 6 IMO Mathematics Olympiad practice · HOTS / Achievers · Multi-Concept Achievers
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