Plant Operator Selection System Abstract Pattern Recognition Flashcards

In a visual pattern, a black dot moves one position clockwise around the corners of a square at each step. It starts at the top-left. Where is it after 5 moves?

Answer: Top-left

There are 4 corners; 5 moves mod 4 = 1 move from start, so top-left → top-right — wait: 5 mod 4 = 1, meaning 1 step from top-left clockwise = top-right.

A pattern shows: one shape is inside another. The rule states that the inner shape always has fewer sides than the outer shape. Which is valid?

Answer: Circle inside a triangle

A circle (0/infinite sides, fewest) inside a triangle (3 sides) satisfies 'inner has fewer sides than outer.'

Figures alternate between having horizontal lines and vertical lines as fill. Figure 1 has horizontal lines. Figure 4 has which fill?

Answer: Horizontal lines

Odd figures have horizontal lines; Figure 4 is even, so it has vertical lines — correction: figure 1=H, 2=V, 3=H, 4=V → vertical.

In an abstract analogy: Dark large triangle is to light small triangle as dark large circle is to ___.

Answer: Light small circle

The transformation changes dark→light and large→small while keeping the shape, giving a light small circle.

A sequence of figures: each figure has the same number of shapes as its position number (Figure 1 = 1 shape, Figure 2 = 2 shapes, etc.). Figure 5 has how many shapes?

Answer: 5

The rule directly states the count equals the figure's position number, so Figure 5 has 5 shapes.

A 4-item set of figures contains three that share a common attribute and one that does not. Three figures are all shaded and four-sided; one is unshaded and three-sided. Which is the odd one out?

Answer: The unshaded three-sided figure

The odd one out differs on both shading and number of sides, making it clearly distinct from the other three.

A pattern matrix rule: each figure in column 3 = column 1 figure with column 2 figure's shading removed (XOR). Column 1 row 2 = shaded square, column 2 row 2 = shaded square. What is column 3 row 2?

Answer: Unshaded square

When both column 1 and column 2 have shading (XOR: same inputs cancel), the result is an unshaded square.