A padlock has a 4-digit code, and all 4 digits are different. Four guesses have been tried, each with feedback:
- 2657 — has two correct digits, but neither is in the correct place.
- 0415 — has one correct digit, but it’s in the wrong place.
- 4268 — has no correct digits.
- 1749 — has two correct digits, both in the correct place.
What is the padlock’s code?
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