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Hacking a Safe Lock after 3 tries
Faulty Combination LockCrack the (Poorly Designed) SafeLock OptimisationCracking a combination lockWhose lock is lock-ier?Cristiano Ronaldo's soccer puzzleKey and lock puzzle8-bit Lock and KeyHacking an electronic keypadcrack this code #1965
$begingroup$
My friend has a safe lock, with a numeric password of 4 digits (varying between 0-9 each). She lost the password and looked for my help. Fortunately, I was able to hack it. I could try some different combinations and check how many numbers I got right.
I tried the number 8086 => Only 1 number is right, but in the wrong position.
I tried the number 8857 => Only 1 number is right, but in the wrong position.
I tried the number 0159 => I got 3 numbers right, all in the correct position.
And then the hack stopped working. If I insert just one wrong number, the safe lock will break.
Am I able to open this lock with the information provided by my hack? If so, what is the password?
combinatorics mastermind
asked Mar 15 at 16:14
ChaoticChaotic
621316
$endgroup$
add a comment |
$begingroup$
My friend has a safe lock, with a numeric password of 4 digits (varying between 0-9 each). She lost the password and looked for my help. Fortunately, I was able to hack it. I could try some different combinations and check how many numbers I got right.
I tried the number 8086 => Only 1 number is right, but in the wrong position.
I tried the number 8857 => Only 1 number is right, but in the wrong position.
I tried the number 0159 => I got 3 numbers right, all in the correct position.
And then the hack stopped working. If I insert just one wrong number, the safe lock will break.
Am I able to open this lock with the information provided by my hack? If so, what is the password?
combinatorics mastermind
asked Mar 15 at 16:14
ChaoticChaotic
621316
$endgroup$
add a comment |
$begingroup$
My friend has a safe lock, with a numeric password of 4 digits (varying between 0-9 each). She lost the password and looked for my help. Fortunately, I was able to hack it. I could try some different combinations and check how many numbers I got right.
I tried the number 8086 => Only 1 number is right, but in the wrong position.
I tried the number 8857 => Only 1 number is right, but in the wrong position.
I tried the number 0159 => I got 3 numbers right, all in the correct position.
And then the hack stopped working. If I insert just one wrong number, the safe lock will break.
Am I able to open this lock with the information provided by my hack? If so, what is the password?
combinatorics mastermind
asked Mar 15 at 16:14
ChaoticChaotic
621316
$endgroup$
My friend has a safe lock, with a numeric password of 4 digits (varying between 0-9 each). She lost the password and looked for my help. Fortunately, I was able to hack it. I could try some different combinations and check how many numbers I got right.
I tried the number 8086 => Only 1 number is right, but in the wrong position.
I tried the number 8857 => Only 1 number is right, but in the wrong position.
I tried the number 0159 => I got 3 numbers right, all in the correct position.
And then the hack stopped working. If I insert just one wrong number, the safe lock will break.
Am I able to open this lock with the information provided by my hack? If so, what is the password?
combinatorics mastermind
combinatorics mastermind
asked Mar 15 at 16:14
ChaoticChaotic
621316
asked Mar 15 at 16:14
ChaoticChaotic
621316
edited Mar 17 at 14:52
Chaotic
asked Mar 15 at 16:14
ChaoticChaotic
621316
asked Mar 15 at 16:14
ChaoticChaotic
621316
asked Mar 15 at 16:14
ChaoticChaotic
621316
621316
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
I think the correct password is
0179
Reasoning
Combining the second and third clues tells us that '5' is not in the combination, otherwise it would be in the correct position in the second combination. Therefore, 0, 1, and 9 are all in the correct position in the last combination. The first clue tells us that the third digit is not 8. Using the second clue again, the only remaining option is 7.
answered Mar 15 at 16:20
hexominohexomino
44.2k4134213
$endgroup$
$begingroup$
Ah, sniped! Well done!
$endgroup$
– Matt
Mar 15 at 16:21
$begingroup$
Seconds away from beating you!
$endgroup$
– Greg
Mar 15 at 16:21
$begingroup$
Well done!! Got me too!
$endgroup$
– El-Guest
Mar 15 at 16:22
add a comment |
Your Answer
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
I think the correct password is
0179
Reasoning
Combining the second and third clues tells us that '5' is not in the combination, otherwise it would be in the correct position in the second combination. Therefore, 0, 1, and 9 are all in the correct position in the last combination. The first clue tells us that the third digit is not 8. Using the second clue again, the only remaining option is 7.
answered Mar 15 at 16:20
hexominohexomino
44.2k4134213
$endgroup$
$begingroup$
Ah, sniped! Well done!
$endgroup$
– Matt
Mar 15 at 16:21
$begingroup$
Seconds away from beating you!
$endgroup$
– Greg
Mar 15 at 16:21
$begingroup$
Well done!! Got me too!
$endgroup$
– El-Guest
Mar 15 at 16:22
add a comment |
$begingroup$
I think the correct password is
0179
Reasoning
Combining the second and third clues tells us that '5' is not in the combination, otherwise it would be in the correct position in the second combination. Therefore, 0, 1, and 9 are all in the correct position in the last combination. The first clue tells us that the third digit is not 8. Using the second clue again, the only remaining option is 7.
answered Mar 15 at 16:20
hexominohexomino
44.2k4134213
$endgroup$
$begingroup$
Ah, sniped! Well done!
$endgroup$
– Matt
Mar 15 at 16:21
$begingroup$
Seconds away from beating you!
$endgroup$
– Greg
Mar 15 at 16:21
$begingroup$
Well done!! Got me too!
$endgroup$
– El-Guest
Mar 15 at 16:22
add a comment |
$begingroup$
I think the correct password is
0179
Reasoning
Combining the second and third clues tells us that '5' is not in the combination, otherwise it would be in the correct position in the second combination. Therefore, 0, 1, and 9 are all in the correct position in the last combination. The first clue tells us that the third digit is not 8. Using the second clue again, the only remaining option is 7.
answered Mar 15 at 16:20
hexominohexomino
44.2k4134213
$endgroup$
I think the correct password is
0179
Reasoning
Combining the second and third clues tells us that '5' is not in the combination, otherwise it would be in the correct position in the second combination. Therefore, 0, 1, and 9 are all in the correct position in the last combination. The first clue tells us that the third digit is not 8. Using the second clue again, the only remaining option is 7.
answered Mar 15 at 16:20
hexominohexomino
44.2k4134213
answered Mar 15 at 16:20
hexominohexomino
44.2k4134213
answered Mar 15 at 16:20
hexominohexomino
44.2k4134213
answered Mar 15 at 16:20
hexominohexomino
44.2k4134213
44.2k4134213
$begingroup$
Ah, sniped! Well done!
$endgroup$
– Matt
Mar 15 at 16:21
$begingroup$
Seconds away from beating you!
$endgroup$
– Greg
Mar 15 at 16:21
$begingroup$
Well done!! Got me too!
$endgroup$
– El-Guest
Mar 15 at 16:22
add a comment |
$begingroup$
Ah, sniped! Well done!
$endgroup$
– Matt
Mar 15 at 16:21
$begingroup$
Seconds away from beating you!
$endgroup$
– Greg
Mar 15 at 16:21
$begingroup$
Well done!! Got me too!
$endgroup$
– El-Guest
Mar 15 at 16:22
$begingroup$
Ah, sniped! Well done!
$endgroup$
– Matt
Mar 15 at 16:21
$begingroup$
Ah, sniped! Well done!
$endgroup$
– Matt
Mar 15 at 16:21
$begingroup$
Seconds away from beating you!
$endgroup$
– Greg
Mar 15 at 16:21
$begingroup$
Seconds away from beating you!
$endgroup$
– Greg
Mar 15 at 16:21
$begingroup$
Well done!! Got me too!
$endgroup$
– El-Guest
Mar 15 at 16:22
$begingroup$
Well done!! Got me too!
$endgroup$
– El-Guest
Mar 15 at 16:22
add a comment |
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