In the range from 10 to 200. find numbers in decimal notation, in which at least one digit “9” is present.

8 two-digit numbers with one “9” in the record, 10 numbers with “9” in the dignity category, 1 three-digit number with “9” in the ones place, 8 more numbers with one “9”, 10 more numbers.
Total: 8 + 10 + 1 + 8 + 10 = 37



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.