How many combinations are there to a 4-digit lock if you know the 4 digits but don't know the order? - Quora
![Why repeating a digit may improve security on your iPhone's 4-digit lockscreen PIN – Mind Your Decisions Why repeating a digit may improve security on your iPhone's 4-digit lockscreen PIN – Mind Your Decisions](https://mindyourdecisions.com/blog/wp-content/uploads/2011/01/iphone_passcode1.jpg)
Why repeating a digit may improve security on your iPhone's 4-digit lockscreen PIN – Mind Your Decisions
Figure1: FASD 4-Digit Diagnostic Code. A) Abbreviated case-definitions... | Download Scientific Diagram
![View question - How many different combinations can you make with a 4 digit pin? Numbers form 0-9 like a bank pin View question - How many different combinations can you make with a 4 digit pin? Numbers form 0-9 like a bank pin](https://web2.0calc.com/img/question-preview-image/how-many-different-combinations-can-you-make-with-a-4-digit-pin-numbers-form-0-9-like-a-bank-pin.png)
View question - How many different combinations can you make with a 4 digit pin? Numbers form 0-9 like a bank pin
![Randy Olson on Twitter: "27% of all 4-digit PINs can be guessed by attempting these 20 combinations. #security https://t.co/zr6rJNy3Hd https://t.co/u8D4uHaTwz" / Twitter Randy Olson on Twitter: "27% of all 4-digit PINs can be guessed by attempting these 20 combinations. #security https://t.co/zr6rJNy3Hd https://t.co/u8D4uHaTwz" / Twitter](https://pbs.twimg.com/media/Ccyb4bZUAAARU4r.jpg)