Plant Operator Selection System Abstract Pattern Recognition Flashcards

A sequence of shapes follows this rule: circle → square → triangle → circle → square → ? What comes next?

Answer: Triangle

The pattern repeats in a three-item cycle: circle, square, triangle, so after square comes triangle.

Each figure in a row has one more side than the previous. The row starts with a triangle. What is the fourth figure?

Answer: Hexagon

Triangle (3) → square (4) → pentagon (5) → hexagon (6), so the fourth figure is a hexagon.

A grid shows: Row 1 has ●●○, Row 2 has ●○○, Row 3 has ○○○. How many filled circles are in the pattern overall?

Answer: 3

Row 1 has 2 filled, Row 2 has 1 filled, Row 3 has 0 filled, totaling 3 filled circles.

In a pattern matrix, each row's third figure is created by combining (overlapping) the first and second figures. Row 3 has a circle and a square as the first two figures. What is the third?

Answer: A circle inside a square

The rule is overlay/combine, so the third figure shows a circle inside a square.

Shapes are shaded according to position: top-left = dark, top-right = light, bottom-left = light, bottom-right = dark. A new 2×2 grid follows the same rule. Which cell is light?

Answer: Top-right

Following the established rule, top-right cells are shaded light.

A series of figures alternates between pointing left and pointing right. Figure 1 points right. Which figure number points left?

Answer: Figure 2

The alternating rule means even-numbered figures point left, so Figure 2 points left.

In an abstract sequence, each figure gains one dot per step: step 1 = 1 dot, step 2 = 2 dots. At step 5, a dot is removed instead of added. How many dots are at step 6?

Answer: 5

Steps 1–4 add dots (1,2,3,4); step 5 removes one giving 3; step 6 adds one giving 4 — wait, re-reading: the removal at step 5 gives 3, step 6 adds giving 4... Actually following add-each-step: step 5 would be 5 but a dot is removed making it 4; step 6 adds one giving 5.