Neighborhood

I have 7 cups: 1 2 3 4 5 6 7. How many opportunities of standings cups are there if 1 and 2 are always neighborhood?

Result

n =  1440

Solution:

Solution in text n =







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To solve this example are needed these knowledge from mathematics:

Would you like to compute count of combinations? See also our variations calculator. See also our permutations calculator.

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