![]() ![]() The clue says, the right digit is only one, and in the wrong place. The code is in the form, “? 9 4” with only the leftmost digit to discover.Ĭode of 569 of clue 5 includes digit 9. The right digit in the code is 9 and it appears in the correct middle position. ![]() rightmost position belongs to right digit 4.Ĭonclusion 4: Digit 1 in 291 is wrong (because of position conflict with digit 4) along with digit 2. ![]() The code is in the form: “? 4”, with first two digits from left not yet known.Īs potential of clue 1 not yet exhausted, revisit it, Next conclusion made,Ĭonclusion 3: As leftmost position in 463 and middle position in 245 both are wrong for the right digit 4, correct position of digit 4 must be the rightmost. So conclude,Ĭonclusion 2: As in 245 both digits 2 and 5 are wrong, digit 4 must be the right one and it can occupy only the leftmost or the rightmost position.ĭigit 4 again appears in 3rd clue on code 463 that says, two digits are right but both are in the wrong place. Now look at the 4th clue on 578 that declares all three digits as wrong. This is a contradiction.Ĭonclusion 1: Digit 2 is wrong and is not in the code. But Clue 1 and Clue 2 together help to draw the first blood.Īnalysis: Digit 2 cannot be in the same leftmost position in 291 and 245 and be the right digit in the right place in 291 and the right digit in the wrong place in 245. No decision can be taken using only Clue 1. Solution to Number lock puzzle: Can you crack the code? Number lock puzzle: Can you crack the code to open the lock?įollowing shows five clues based on three-digit codes for a number lock.Ĭlue 1: Code 291: One digit is right and is in its place.Ĭlue 2: Code 245: One digit is right and is in the wrong place.Ĭlue 3: Code 463: Two digits are right but both are in the wrong place.Ĭlue 5: Code 569: One digit right but is in the wrong place.įrom the five clues, find the three-digit code that will open the number lock. From the clues, the correct three digit code that'll open the lock is to be discovered in 10 mins. The number lock puzzle poses 5 clues on 3 digit codes. ![]()
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