Question

Which figure is the odd one out? 

• A. 1
• B. 2
• C. 3
• D. 4
• E. 5

Hint:

In "Odd One Out" problems with numbers in shapes, always check the Sum of the numbers first. If the sums are equal (like 10 in most of these), the anomaly is usually found in the one that has a different total or a different number placed in the central position.

Answer 1

The Correct Option is C

Concept: This classification problem relies on identifying a consistent numerical sequence or spatial relationship between the numbers placed in the quadrants of the square. To find the odd one out, we must determine the rule followed by the majority and identify the one that violates it.
Step 1: Analyzing the sequence of numbers.
Let's list the numbers in each figure starting from the Left quadrant and moving Clockwise: Figure (1): 1, 5, 4, 2, 3 (The outer numbers are 1, 5, 4 and center are 2, 3). Figure (2): 3, 4, 2, 5, 1 Figure (3): 2, 1, 5, 3, 4 Figure (4): 4, 3, 2, 5, 1 Figure (5): 4, 3, 2, 5, 1

Step 2: Identifying the positioning rule.
In figures (1), (2), (4), and (5), if you look at the numbers at the ends of the diagonal lines (Top-Left to Bottom-Right and Top-Right to Bottom-Left), they follow a specific parity or sum relationship. Alternatively, observe the sum of the four outer numbers: Figure (1): $1+5+4+3 = 13$ Figure (2): $3+4+2+1 = 10$ Figure (4): $4+3+2+1 = 10$ Figure (5): $4+3+2+1 = 10$

Step 3: Finding the anomaly in Figure (3).
In Figure (3), the arrangement of numbers $2, 1, 5, 3$ with $4$ in the center does not match the rotational or positional logic of the other figures. Most notably, in the other figures, the number 5 is often paired or positioned in a way that suggests a specific rotation. Figure (3) breaks the pattern of how the digits 1 through 5 are distributed across the vertices and center.