Question 22
The product $999n$ contains no digit 9. Find the smallest positive integer $n$ with this property. Here $999n$ means $999\times n$.
Answer format: enter one whole number without units. The source answer sheet uses four digits with leading zeros if needed; ordinary numeric entry is used here.
Answer format: enter one whole number without units. The source answer sheet uses four digits with leading zeros if needed; ordinary numeric entry is used here.