 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from Jo, a teacher: I have lost the code for my car stereo. I need all the possible 4 digit combinations using the numerals 1 2 3 4 5 and 6. Thank you |
Hi Jo,
I am assuming that you are allowed to repeat digits, for example 1311 is a valid combination. If so there are 6 × 6 × 6 × 6 = 1296 possible combinations. The easiest way to try them all is to go through them in order
1111
1112
1113
1114
1115
1116
1121
1122
.
.
.
This is like watching the old style (non-digital) odometer in a car but using only the digits 1 to 6.
Good luck with this,
Penny
| ||
| ||
| ||
 |
 |
|
Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.