Serial Reasoning Flashcards

A 3×3 matrix has a dot that moves diagonally: top-left, center, bottom-right, then wraps to top-right, center, ___. Where does it go next?

Answer: Bottom-left

The dot follows a diagonal path from top-right through center to bottom-left.

Each figure in a series contains one more internal segment than the last: 0 segments, 1 segment, 2 segments, 3 segments, ___. What is the fifth figure?

Answer: 4 segments

One segment is added per step, so the fifth figure has 4 segments.

A matrix row shows three shapes that share the same outline but differ in fill: solid, striped, and empty. What rule applies to all rows?

Answer: Every row contains exactly one solid, one striped, and one empty version of the same shape

Each row uses all three fill styles exactly once for the same base shape.

A shape sequence alternates between two sizes AND two colors each step: large-black, small-white, large-black, ___. What is the fourth figure?

Answer: Small-white

The sequence repeats the pair large-black / small-white, so the fourth figure is small-white.

In a 3×3 grid, each column sums to the same total number of sides: column 1 has triangle+square+pentagon. What is the total number of sides in each column?

Answer: 12

Triangle (3) + square (4) + pentagon (5) = 12 sides.

A progression shows shapes being split in half each step: 1 whole circle, 2 half-circles, 4 quarter-circles, ___. What comes next?

Answer: 8 eighth-circles

Each step doubles the count while halving the piece size, giving 8 eighth-circles.

A matrix follows this rule: the shape in each cell is determined by combining the shapes in the same row's first cell and same column's first cell. If row 3 starts with a triangle and column 2 starts with a square, what shape is at row 3, column 2?

Answer: A triangle inside a square

The combination rule places the row shape inside the column shape, yielding a triangle inside a square.