N=6 takes a while to write out, but, say, starting from the smallest, we can easily figure out the first 3 numbers from the lowest 3 sums... the rest is algebra.
The actual test had the extra interesting case of N=8 :-)
Brainsteem Mathematics Challenges: Pairwise Sums
N=6 takes a while to write out, but, say, starting from the smallest, we can easily figure out the first 3 numbers from the lowest 3 sums... the rest is algebra.
The actual test had the extra interesting case of N=8 :-)