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  1. How many digits in all are required to write numbers from 1 to 50?
    1. 100
    2. 92
    3. 91
    4. 50
Correct Option: C

Number of digits from 1 to 9 = 9
Number of digits used in writing from 10 to 50
= 41 × 2 = 82
∴  Total digits = 82 + 9 = 91


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