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How many whole numbers from 1 to 100 do not contain the digit 3?

Competition practicePermutations & Combinations
  • A80
  • B81
  • C90
  • D72

Step-by-Step Solution

Write 0–99 as two digits: without a 3 there are , including 00. Drop 00 (80 numbers from 1 to 99) and add 100: .
Answer: B) 81

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