Question
In a 3×3 grid, each row contains the same shape (square, triangle, circle) but the shading progresses left-to-right: white, grey, black. Row 3 shows a square (white) and a square (grey); the third cell is missing. Which rule family is in play, and what should the missing cell contain?
Mark scheme (2 marks):
- 1 mark: identifies the rule as an attribute progression (specifically shading progression).
- 1 mark: states the missing cell is a black square.
2 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.