13
One solution is
Thought process:
7
As an addendum to the answer from @Arnaud:
4
My first guess would be
because
Of course, this assumes
I don't think
3
The puzzle asks for a maximal sum for the numbers on the edges, so...
2
If your three dots at the end would mean that 3 elements left then the pattern is the palindromic one. However if we don`t know how many elements are left, we cannot state this.
2
I get
Because
2
The problem is not really about products, more about finding an arrangement of digits 1 to N-1 (for base N, since digit N does not exist in base N), that conforms to the criterion that any pair in the arrangement is part of the set of single digit products.
There could be a better way to solve this, but I wrote a small program that creates a table of ...
1
The answer is:
Because the filled-up pentagon looks like:
The sum in each edge is 38. This is the maximum I got after several trial & errors.
1
After @SteveV's progress:
Then, given the language tag, we now
Giving
Meaning (approximately)
1
Short and Concise solution,
Finally,
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