Puzzle #27: Solid, Hollow, Dotted

Easy · Distribution · target time about 13 seconds

Which option completes the pattern?

How to solve it (answer: E)

The rule

Each row and each column has one solid, hollow, and dotted shape.

Look at the top row: a medium dotted triangle, then a medium solid triangle, then a medium hollow triangle.
The middle row uses the same values in a different order.
The bottom row has a medium hollow triangle and a medium dotted triangle, so it is missing a medium solid triangle.

Tip: List what each row already has, then pick the one value the row is missing.

The wrong options keep most of the pattern and change the fill or the size, so each one looks finished at a glance. Check both before you choose.

Option A: This row already has a hollow shape.
Option B: This row already has a dotted shape.
Option C: Every triangle in the grid is the same size, but this one is bigger.
Option D: This row already has a hollow shape. Every triangle in the grid is the same size, but this one is bigger.
Option F: This row already has a dotted shape. Every triangle in the grid is the same size, but this one is bigger.

Each element appears once per row and column. Read the guide to distribution puzzles for the method and the common traps.

The Cogniva test has 20 puzzles across four pattern types and gives you a free score band in about 7 minutes.

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