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Rankle #95 answer: average thickness (thinnest to thickest)

Daily puzzle for Monday 7 September 2026

The answer

Rank by average thickness (thinnest to thickest)

  1. 1Earth's Crust35 km
  2. 2Earth's Inner Core1,220 km
  3. 3Earth's Outer Core2,260 km
  4. 4Earth's Mantle2,900 km

Why this order

Ranked thinnest to thickest, Earth's Crust (35 km) goes at the top and Earth's Mantle (2,900 km) at the bottom.

The closest call is Earth's Outer Core (2,260 km) against Earth's Mantle (2,900 km), about 28% apart. That is the swap most likely to cost a point.

The biggest gap is between Earth's Crust and Earth's Inner Core, about 35 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 83.

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.