# Maths Brain Teasers 126 :: Can You Solve 3 Digit Lock Puzzle?

in STEMGeeks11 months ago

Hey All; @StemGeeks Mathematician;

Without further, ado, let's get to our puzzle for today:: Maths Brain Teasers 126 :: Can You Solve 3 Digit Lock Puzzle?

Have a close look at the image given and see if you can find the correct numbers that replace the question mark.

There is logic to resolve the puzzle; try finding out the logic and it should be resolved in seconds.. Guesswork isn't going to help...

With that, I'll leave you all with the Maths Brain Teasers 126 :: Can You Solve 3 Digit Lock Puzzle? Good luck solving the puzzle...

##### Maths Brain Teasers 126 :: Can You Solve 3 Digit Lock Puzzle? - Solved with Explanation

Let's have a look at the Step by Step instructions to Solve the Maths Brain Teasers 126 :: Can You Solve 3 Digit Lock Puzzle?

If you carefully look at the Image in question; You would have noticed the following pattern is being followed::

### Ideally no pattern but rather we need to focus on the statement given/provided & eliminate numbers

Let's have a look at the first example::

### With this, we know the number position will be as follows:: 1-?-? or ?-?-2

Since, Number 4 cant be according to line three

### let's take a look at line 4

This eliminates the previous possibility; 1 0 9

Finally, the answer to the puzzle and the number to crack the code is:: 3 0 2

At the same time will like to echo @serhotest detailed explanation::

My method: On line one ( 1-4-2) we have one number well placed, as the 4 is wrong according to line three we have 2 posibilities:
1-?-? or ?-?-2
According to line two, two numbers are correct and well placed (3-0-9)
The 0 is correct and well placed because it doesn't interact with previous possibilities, so the new posibilities are:
1-0-9 or 3-0-2
On line four one number is correct but wrongly placed (1-3-9)
So for our previous possibilities it can't be the first (1-0-9) because we would have two numbers correctly placed.
Then only one possibility remains and we have the code:
3-0-2

### STEM token GiveAway

I'll be again doing a giveaway of STEM tokens to the lucky random winner with the correct answer. For the last contest, which was Maths Brain Teasers 126 :: Can You Solve 3 Digit Lock Puzzle?.

We had just two entries and I am happy to see the engagement. At the same time, it's great to see the detailed answers provided by everyone as to how they arrived at the solution of the puzzle.. Well done guys.. Way to GO... Now the results part; both the entries provided the right answer and hence I am going to split the rewards between two of them @serhotest && @satorihime

Congratulations @serhotest && @satorihime - You WIN yourself 5 STEM tokens. You should be having the rewards in your STEM Wallet Soon.

### Math Quote for the Day::

Here is the motivation to solve the Maths Equation Puzzle?

If you like my work, then please spread the Word.. that we do have the Math Brain Teasers competition here @StemGeeks platform. Reblog is much appreciated.

Best Regards

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PS:: All the Maths Brain Teasers; are made by me using the Pro Canva License Version

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Well done @ozmandias
I get the same result in this arithmetic progression, but too late 🤨

Thanks 🙂