Find the correct number lock code from the four clues, each with a 3 digit code and hints on correct digits and their placements. Apply logic analysis.
The 3 digit number lock puzzle with 4 clues including 368
Find the 3 digit code from the four clues to unlock the number lock:
Clue 1: Code 3 6 8 : One digit right and in right position.
Clue 2: Code 3 8 7 : Nothing is correct.
Clue 3: Code 2 7 6 : One digit right but wrongly placed.
Clue 4: Code 4 7 1 : Two digits right but wrongly placed.
Solution to 3 digit number lock puzzle with 4 clues including 368
Step 1: Identify the first right digit
From Clue 1 and Clue 2, digit 6 is correct.
Clue 1: Code 3 6 8 : One digit right and in right position.
Clue 2: Code 3 8 7 : Nothing is correct.
From Clue 2, digits 3 and 8 are wrong and also appear in Clue 1.
- Digit 6 is the single correct digit in Clue 1 and takes up the 2nd position.
Step 2: Identify two more incorrect digits
From Clue 3 identify digits 2 and 7 as incorrect.
Clue 3: Code 2 7 6 : One digit right but wrongly placed.
- As digit 6 is already identified as correct, the rest, digits 2 and 7 must be incorrect.
Identify the rest of two correct digits and crack the code
From Clue 4 identify digits 1 and 4 as correct.
Clue 4: Code 4 7 1 : Two digits right but wrongly placed.
- With digit 7 already identified as wrong, the rest, digits 1 and 4 must be correct but both in wrong positions.
- As second position is already taken up by digit 6, they must interchange positions. Digit 1 takes first position and digit 4 third.
Solution: Code to open the lock is 1 6 4.
Verify the code against each of the clues.
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