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The natural numbers are written in order without gaps: 1234567891011121314… What is the 100th digit of this string?

Competition practiceNumber System, HCF & LCM
  • A5
  • B4
  • C6
  • D0

Step-by-Step Solution

The first 9 digits are 1 to 9. The next 90 digits are the 45 numbers 10 to 54, reaching digit 99. Digit 100 is the first digit of 55, which is 5.
Answer: A) 5

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