First one:
Suppose that \(|a - b| + |b - c| + |c - a| = 20.\)
What is the maximum possible value of \(|a - b|\)?
Second one:
Suppose that \([|a - b| + |b - c| + |c - d| + \dots + |m-n| + |n-o| + \cdots+ |x - y| + |y - z| + |z - a| = 20.\)
What is the maximum possible value of \(|a-n|\)?
