Abstract Reasoning Logical Deduction 2 — Questions and Answers
Question 1: In an odd-one-out question: circle, oval, ellipse, square. Which is the odd one out?
- Circle
- Oval
- Ellipse
- Square (Correct answer)
Correct answer: Square
Circle, oval, and ellipse all have curved edges with no corners; a square has four corners, making it the odd one out.
Question 2: A code in an abstract test maps shapes to numbers: triangle=3, square=4, pentagon=5. What does hexagon equal?
- 5
- 6 (Correct answer)
- 7
- 8
Correct answer: 6
The code maps each shape to its number of sides; a hexagon has 6 sides, so hexagon = 6.
Question 3: In a classification question: which shape does NOT belong with the others — equilateral triangle, isosceles triangle, right triangle, square?
- Equilateral triangle
- Isosceles triangle
- Right triangle
- Square (Correct answer)
Correct answer: Square
All triangles have three sides; a square has four sides and does not belong in the group of triangles.
Question 4: If shape A implies shape B, and shape B implies shape C, and shape C is absent, what can you conclude?
- Shape A is present
- Shape B is present
- Shape A is absent (Correct answer)
- Shape C is present
Correct answer: Shape A is absent
By the contrapositive: if C is absent (¬C), then B is absent (¬B), then A is absent (¬A).
Question 5: An abstract test shows: all large shapes have thick borders, some thick-bordered shapes are triangles. Shape R is a large triangle. What can be deduced?
- Shape R has a thick border (Correct answer)
- Shape R has a thin border
- Shape R is not large
- Nothing certain
Correct answer: Shape R has a thick border
The first rule states all large shapes have thick borders; Shape R is large, so it must have a thick border.
Question 6: In a logical sequence, figures that are both shaded AND large belong to Class X. Figure T is shaded but small. Does Figure T belong to Class X?
- Yes
- No (Correct answer)
- Only if it has corners
- Cannot be determined
Correct answer: No
Class X requires both shaded AND large; Figure T is shaded but small, failing the large condition, so it does not belong to Class X.
Abstract Reasoning Logical Deduction 2
In an odd-one-out question: circle, oval, ellipse, square.
Which is the odd one out?