NMMSE MAT Non-Verbal Classification (Part 2)

 Welcome back to Part 2 of our guide on mastering Non-Verbal Classification (Spot the Odd Figure Out) for the NMMSE Mental Ability Test (MAT)! If you read [Part 1], you already know how to identify basic shapes, line counts, and simple rotations.

Now, it’s time to take your speed and accuracy to the next level. In this second installment, we dig into complex multi-element rules, tricky mirror vs. rotational symmetries, and shaded area proportions. We'll also break down real exam-level practice questions step-by-step so you can spot even the hidden odd shapes in seconds.

NMMSE MAT Section: Non-Verbal Classification (Set 2 - Odd One Out)

(1) Spot the odd figure based on line segment count matching side count:

(A)

(B)

(C)

(D)

Detailed Solution:

In figures (A), (B), and (D), the number of external markers (lines/dots) matches the number of sides of the main polygon: Triangle ($3$), Square ($4$), Pentagon ($5$). Figure (C) is a Hexagon ($6$ sides) but has only $4$ line markers attached. Hence, (C) is the odd figure.

(2) Select the option where the inner figure does NOT have one less side than the outer figure:

(A)

(B)

(C)

(D)

Detailed Solution:

Rule: $\text{Sides of Inner Shape} = \text{Sides of Outer Shape} - 1$.
* (A) Outer: Square ($4$), Inner: Triangle ($3$) $\implies 4 - 1 = 3$
* (B) Outer: Hexagon ($6$), Inner: Pentagon ($5$) $\implies 6 - 1 = 5$
* (D) Outer: Pentagon ($5$), Inner: Square ($4$) $\implies 5 - 1 = 4$
* (C) Outer: Hexagon ($6$), Inner: Triangle ($3$) $\implies$ Difference is $3$, not $1$. Thus, (C) is odd.

(3) Identify the odd figure based on line orientation relative to the main structure:

(A)

(B)

(C)

(D)

Detailed Solution:

In figures (A), (B), and (D), the attached line segment projects **perpendicularly from the midpoint of a side**. In figure (C), the line projects diagonally from a vertex. Hence, (C) is the odd one out.

(4) Which letter design is the odd one out based on symmetry?

(A)

(B)

(C)

(D)

Detailed Solution:

Letters 'A', 'M', and 'Y' possess **vertical line symmetry** (their left and right halves are mirror reflections of each other). Letter 'F' is completely asymmetric. Thus, (D) is odd.

(5) Choose the option with an inconsistent number of enclosed regions:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A), (B), and (D) are divided into **4 distinct enclosed regions**. Figure (C) is divided into **3 enclosed regions** (2 upper triangles and 1 lower trapezium). Therefore, (C) is odd.

(6) Spot the figure where the dot lies outside the intersecting zone:

(A)

(B)

(C)

(D)

Detailed Solution:

In figures (A), (B), and (D), the small blue dot is placed inside the **common overlapping region** shared by both geometric shapes. In figure (C), the dot lies exclusively inside the circle and outside the rectangle. Thus, (C) is odd.

(7) Find the figure that does NOT feature parallel line pairs:

(A)

(B)

(D)

(C)

Detailed Solution:

Figures (A) Square, (B) Parallelogram, and (D) Regular Hexagon all possess **at least one pair of parallel sides**. Figure (C) Triangle has no parallel sides. Hence, (C) is odd.

(8) Identify the odd option based on arrow head positioning:

(A)

(B)

(C)

(D)

Detailed Solution:

In figures (A), (B), and (D), the arrow points **outward, away from the square**. In figure (C), the arrow points **inward, toward the square**. Thus, (C) is the odd figure.

(9) Select the figure that does NOT follow the shading progression:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A), (B), and (D) consist of **one filled shape and one unfilled contour shape**. Figure (C) contains **two fully filled solid shapes**. Therefore, (C) is odd.

(10) Choose the figure with an inconsistent line-ending element:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A), (B), and (C) feature lines terminated by a **filled circle**. Figure (D) terminates with a **filled square**. Hence, (D) is odd.

(11) Spot the odd figure based on inner vs. outer rotational orientation:

(A)

(B)

(C)

(D)

Detailed Solution:

In figures (A), (C), and (D), the inner and outer shapes share the exact same orientation (apex pointing up, sides aligned). In figure (B), the inner triangle is **inverted ($180^\circ$ flipped)** relative to the outer triangle. Thus, (B) is odd.

(12) Find the odd figure based on line stroke pattern:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A), (B), and (D) are constructed using **dashed outlines**. Figure (C) is drawn with a **continuous solid line**. Therefore, (C) is the odd figure.

(13) Select the figure where lines cross each other:

(A)

(B)

(C)

(D)

Detailed Solution:

In figures (A), (C), and (D), the elements are completely disjoint and **do not intersect**. In figure (B), the two line segments cross each other at an intersection point. Hence, (B) is odd.

(14) Spot the odd shape based on straight vs. curved boundary lines:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A), (B), and (C) are rectilinear polygons made **exclusively of straight line segments**. Figure (D) contains a continuous curved boundary line. Thus, (D) is the odd one out.

(15) Choose the odd figure based on corner-marker placement:

(A)

(B)

(C)

(D)

Detailed Solution:

In figures (A), (B), and (D), circles are placed directly at **every vertex (corner)** of the polygon. In figure (C), the circles are placed at the **midpoints of the edges**. Hence, (C) is odd.

(16) Identify the figure that does NOT feature 4-fold rotational symmetry:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A), (B), and (D) are square-based/circular symmetric patterns with **4-fold rotational symmetry** ($90^\circ$ invariant). Figure (C) is a non-square rectangle with **2-fold rotational symmetry** ($180^\circ$ invariant). Therefore, (C) is odd.

(17) Spot the figure with an odd count of internal partition lines:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A) ($2$ lines $\implies 4$ sectors) and (B) ($4$ lines $\implies 8$ sectors) split the circle using an **even number of chords**. Figure (C) splits using $3$ lines ($\implies 6$ sectors), which is an odd number of lines. Thus, (C) is odd.

(18) Find the odd figure based on geometric curvature:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A), (B), and (D) are bounded by smooth continuous **curved lines (0 vertices)**. Figure (C) is a polygon bounded by **3 straight line segments with 3 vertices**. Hence, (C) is odd.

(19) Identify the figure that differs in relative symbol positioning:

(A)

(B)

(C)

(D)

Detailed Solution:

Figures (A), (B), and (D) contain **one plus ($+$) sign and one minus ($-$) sign** paired horizontally. Figure (C) contains **two plus ($+$) signs** aligned vertically. Therefore, (C) is odd.

(20) Spot the odd figure based on diagonal line connections:

(A)

(B)

(C)

(D)

Detailed Solution:

In figures (A), (B), and (D), the internal lines connect **opposite corner vertices (true diagonals)**. In figure (C), the line connects arbitrary non-vertex edge points across the square. Thus, (C) is the odd figure.

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