Question 13
Beaver Roni has forgotten the password to his treasure cave. His notes say:
- The password has three digits.
- 1 7 2 contains exactly one correct digit, in the wrong position.
- 8 5 4 contains two correct digits, both in the wrong positions.
- 9 8 6 contains one correct digit, in the wrong position.
- 7 5 1 contains one correct digit, in the correct position.
What is the sum of the password’s digits?
Editorial convention: each clue gives the exact number of present digits; the remaining digits in that clue are absent.
- The password has three digits.
- 1 7 2 contains exactly one correct digit, in the wrong position.
- 8 5 4 contains two correct digits, both in the wrong positions.
- 9 8 6 contains one correct digit, in the wrong position.
- 7 5 1 contains one correct digit, in the correct position.
What is the sum of the password’s digits?
Editorial convention: each clue gives the exact number of present digits; the remaining digits in that clue are absent.