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How many times does the digit 2 appear in the numbers from 10 to 100?
Updated: 12/17/2022
Wiki User
∙ 11y agoBest Answer
The easiest way to do this is to break this into cases:
Case 1: Number Starts with 2 (20-29).
20, 21, 22, 23, 24, 25, 26, 27, 28, 29
n = 11 (it's 11, because 22 has the number twice)
Case 2: Number ends with 2 (12, 32, 42... )
12, 32, 42, 52, 62, 72, 82, 92
n = 8 (we skipped 22, because we counted it in case 1)
11 + 8 = 19
2 appears 19 times from 10 to 100
Wiki User
∙ 11y agoThis answer is:
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