2. How many numbers from 1 to 100 are there, each of which is divisible by 3 but does not contain the digit 3 in its representation?
2. There are a total of 33 numbers up to 100 that are divisible by 3 (100: 3=33). Among these numbers, those that have the digit 3 in their representation are: $3,30,33,36,39,63,93$, i.e., 7 numbers. Therefore, the numbers divisible by 3 but not containing the digit 3 are 26 $(33-7=26)$.