Plant Operator Selection System Test Plant Operator Selection System Figural Reasoning 4 — Questions and Answers
Question 1: A sequence shows a triangle with its apex pointing up, then right, then down. Where does the apex point in the next figure?
- Up
- Down
- Left (Correct answer)
- Right
Correct answer: Left
The apex rotates 90° clockwise each step: up→right→down→left.
Question 2: A figure analogy: circle with horizontal line is to circle with vertical line as square with horizontal line is to ___.
- Square with diagonal line
- Circle with vertical line
- Square with vertical line (Correct answer)
- Triangle with vertical line
Correct answer: Square with vertical line
The transformation rotates the internal line 90°, so a square with a horizontal line becomes a square with a vertical line.
Question 3: A 3×3 matrix has one black cell, one gray cell, and one white cell per row and per column. The top-left is black, top-middle is gray, and middle-left is gray. What is the bottom-right cell?
- Black (Correct answer)
- Gray
- White
- Striped
Correct answer: Black
Each row and column must contain exactly one black, one gray, and one white cell; the bottom-right must be black to satisfy both constraints.
Question 4: Which transformation turns a letter 'b' into a letter 'd'?
- 90° clockwise rotation
- Reflection across a vertical axis (Correct answer)
- Reflection across a horizontal axis
- 180° rotation
Correct answer: Reflection across a vertical axis
Reflecting 'b' across a vertical axis flips it horizontally, producing 'd'.
Question 5: A series of figures shows a shaded region growing by one equal segment per step around a circle's perimeter: 1 segment shaded, 2 shaded, 3 shaded. If the circle has 6 equal segments, what fraction is shaded at step 5?
- 3/6
- 4/6
- 5/6 (Correct answer)
- 6/6
Correct answer: 5/6
At step 5, five of the six segments are shaded, giving 5/6.
Question 6: Two figures are mirror images except one has an extra small triangle in the upper-right corner. What rule does this violate in a matching-pairs task?
- Rotation rule
- Exact symmetry rule (Correct answer)
- Size rule
- Color rule
Correct answer: Exact symmetry rule
A matching-pairs task requires the figures to be exact mirror images; the extra triangle breaks the exact symmetry rule.
Question 7: A net has four triangles arranged around a central square. When folded, what 3D shape does it produce?
- Cube
- Triangular prism
- Square pyramid (Correct answer)
- Tetrahedron
Correct answer: Square pyramid
Four triangular faces surrounding a square base fold up to form a square pyramid.
Plant Operator Selection System Test Plant Operator Selection System Figural Reasoning 4
A sequence shows a triangle with its apex pointing up, then right, then down.
Where does the apex point in the next figure?