1.1. Long ago, Kirill thought about today and realized the following:

- Tomorrow is not September;
- In a week, it will be September;
- The day after tomorrow is not Wednesday.

On which of the days listed below are all three statements true at the same time? Select all correct options:

- Monday, August 30
- Tuesday, August 31
- Wednesday, August 25.
Answer: No; No; Yes.

Solution. Note that the first option does not work, as the day after tomorrow (two days after Monday) would be Wednesday. The second option does not work either, as tomorrow (the day after August 31) would be September. The third option fits all the conditions (two days after Wednesday would be Friday, the day after August 25 would be August 26, and a week after August 25 would be September).