Question 89
Is it possible to write numbers $1, 2, 3, 4, 5, 6, 7, 8$ at the vertices of an octagon (one number at each vertex) so that the sum of numbers in each three consecutive vertices is greater than:
a) $13$;
b) $11$;
c) $12$?
a) $13$;
b) $11$;
c) $12$?