How Do You Crack a 3-Digit Puzzle? | Crack the Code Puzzle

The 3 Digit Puzzle is a very interesting puzzle type. In this puzzle, you will be given some clues to crack the 3-digit code. Logical deduction using these clues will lead to the correct code which will open the lock.

In this crack-the-code puzzle tutorial, I will teach you, step by step to solve a digit puzzle. Below is an easy crack-the-code puzzle. The tutorial to solve this puzzle is provided in this post. Try to crack the code and see if you solve it correctly.

Crack the 3-digit Code and Open the Lock

The answer to this "3 Digit Lock Puzzle", can be viewed by clicking the answer button.

The Answer is.........
302

How to Solve the 3 Digit Puzzle?

Our challenge in this crack-the-code puzzle is to find the correct 3-digit code which will open the lock. Let's mark these 3 digits with alphabets A B C.

The first clue tells that only one digit is correct and its position is also correct. It means that exactly one of the digits out of 1 4 2 is correct.

The second clue tells that two numbers are correct and also their position is correct. 

Now combining the information from the 1st and 2nd clues our 3-digits are from the following 6 digits

1 4 2 3 0 9

3rd clue removes 4 from our list so our final 3-digits are from the following set

1 2 3 0 9

4th Clue says that only one digit among 1 3 9 is correct. It means that the remaining digits 2 and 0 are part of the correct 3-digit code

By combing information in the 2nd and 4th Clue we can conclude logically that the 3rd is one among 3 or 9.

Now apply clue 1 on our superset and C=2

So out code _A_ _B_ 2

Now apply this information to clue 2 and we can conclude that 9 cannot be the correct digit as 2 is already there in its place. 

So the other two digits are 3 and 0 in the correct order.

So our 3-digit code for this puzzle is 3 0 2

Once you learn to solve the 3-digit lock puzzle, try out similar crack-the-code puzzles from our website on the below-mentioned link.

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