Even with those four numbers there are countless possible combinations. Good luck with figuring out which one is the right one you punk.

*straightens calculator*

It’s pretty likely that it’s a four digit number, and as there are four digits chosen there, that means that there cannot be any repetition. This means that there are:

n!/(n-4)! possible orders. As ‘n’ is 4 (number of digits available). 4!/0! which becomes 4x3x2x1/1 which simplifies to 24. That means that there are 24 possible combinations of codes. This would take you about two or three minutes to input all possible codes.

Unless an alarm goes off if you don’t get it right in 3 tries.

*straightens calculator again*

Kick the door in.

Well ‘technically’ the code is most likley 1970. Statistically, a majority of people, when told to choose a 4 digit code will choose their birth year. And this key pad is obviously a few years old to put it nicely, so that’s most likley it.

Some Sherlock Holmes just went down over here.

No, no, no. Don’t base your deductions of psychology. Let’s talk chemistry. When you first press a button, there’s more of the natural oils on your skin, and therefore it wears down the numbers on the keys faster. Obviously 0 is the first one, then. Try 0791 first.

Sherlock out.

Woah.

It got better.

And this is why the Sherlock fandom could either rule the world or end it….

Close, but not quite, I think. People will almost always choose a number they can remember. What’s memorable about 0791? Try 0719 - a birthday, 19th of July. That is more likely.

Those deductions are great and all, but unnecessary.