Question: how many numbers must be selected from 123456123456 to guarantee...
Question details
How many numbers must be selected from
{1,2,3,4,5,6}{1,2,3,4,5,6} to guarantee at least a pair of these
numbers add up to 77?
Solution by an expert tutor

How many numbers must be selected from
{1,2,3,4,5,6}{1,2,3,4,5,6} to guarantee at least a pair of these
numbers add up to 77?