I forgot my pattern of my phone. I have few points which I remember about the pattern. Can you help me find the list of possible combinations of patterns for trying and unlocking.
The keypad is as below.
1 2 3
4 5 6
7 8 9
Hints:
- I have not used 1, 4 and 7 for drawing the pattern, therefore left with only 6 numbers.
- The pattern is only of 4 numbers / lines. So patterns having 5-9 lines are not relevant.
- Starting point / number is 2 or 3. So, patterns starting from 5, 6, 8, 9 is not relevant
That's all I remember. Please help. I do not want to do factory reset an lose all my data.
Regards. Arjun M K
If it's 4 digits and every digit only appear once there are $2\cdot 5\cdot 4 \cdot 3 = 120$ combinations - Selection for the first digit is $2$ possible ways, then pick the next from the remaining $5$ digits, the third from the remaining $4$ digits and the last from the remaining $3$ digits.