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AMO 2027 Grades 9-11 SET 1 - Self-study Question 6

AMO · AMO 2027 Grades 9-11 SET 1 - Self-study

Question 6

The sequence $1,2,3,\ldots,7,8,10,\ldots$ consists of all positive integers except integers which contain the digit 9. What is the $300$th term in the sequence?

Question illustration

Choose one option.
  1. 309
  2. 339
  3. 363
  4. 243
  5. 359