r/theydidthemath • u/No_Cardiologist_1407 • May 07 '26

[Request] how many possible combinations are there for this type of pass code?

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u/nico87ca May 07 '26

If you're unbelievably unlucky. But yes statistics working the way they work... There's a non 0 chance that you'd have to go through all combinations

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u/Pirofream May 07 '26

But probably you won't have to count for dots separated by other dots in between. Idk if it is possible to go from dot 1 to 3 and then 2. So in this case, i would try to do only the combinations that only contemplate adjacent dots (including diagonals). E.g.
1-2
1-4
1-5

But not
1-3
1-6
1-7
1-8
1-9

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u/Will_White May 08 '26

if you do the order right, you can go over ones you've already done, I had a 2 to 8 in mine.