Rankle #131 answer: total length (shortest to longest)

The answer

Rank by total length (shortest to longest)

1. 1Aurelian Walls (Rome)19 km
2. 2Hadrian's Wall117 km
3. 3Berlin Wall155 km
4. 4Great Wall of China21,196 km

Why this order

Ranked shortest to longest, Aurelian Walls (Rome) (19 km) goes at the top and Great Wall of China (21,196 km) at the bottom.

The closest call is Hadrian's Wall (117 km) against Berlin Wall (155 km), about 32% apart. That is the swap most likely to cost a point.

The biggest gap is between Berlin Wall and Great Wall of China, about 140 times apart, so that boundary should be the easiest part of the order to get right.

From top to bottom the figures span a factor of roughly 1,100.

These are the figures the game reveals after you submit. They are rounded; only the order is scored.

Difficulty: medium, judged by how close the tightest pair is.

How it was scored

right slot, one place out, two or more out. The score is how many items sit in the right slot, and only 4/4 is a win. Full rules on the how to play page.