Select the Odd One Out

Appeared in: RML MAINS 2025

Explanation

This is a logical reasoning question that tests the ability to categorize items and identify an outlier.
Paper is the correct answer because it is the medium or surface on which writing or drawing is done.
The other three items—Pen, Pencil, and Rubber (Eraser)—are all tools or implements used to perform an action on the paper.
Paper belongs to a different functional category (surface) compared to the others (tools), making it the odd one out.

Option A: A Pen is a tool used for writing, which places it in the same category as a Pencil and a Rubber (Eraser) – all are implements used in the writing process.
Option B: A Pencil is a tool used for writing or drawing. It fits into the same functional group as a Pen and a Rubber (Eraser).
Option D: A Rubber (Eraser) is a tool used for correcting marks. It is an implement used in the writing/drawing process, just like a Pen and Pencil.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Logical Reasoning - Odd One Out as background academic context rather than a clinical decision trigger.
While this is a general intelligence question, the underlying skill of logical reasoning and categorization is fundamental in nursing.
Nurses use categorization to differentiate between signs and symptoms of various diseases, classify patient acuity levels, and group medications by their class and function.
For example, a nurse must be able to identify the 'odd one out' in a patient's vital signs or lab results that indicates a deviation from the expected pattern, signaling a potential problem.

How to Approach the Question

First, read the question carefully to understand the task, which is to find the 'Odd One Out'.
Examine all the given options: Pen, Pencil, Paper, Rubber (Eraser).
Try to find a common property or category that links most of the options together. In this case, think about the function of each item.
Identify that a Pen, a Pencil, and a Rubber are all handheld implements used for an action.
Notice that Paper does not share this characteristic. It is the object upon which the action is performed.
Conclude that Paper is the item that does not fit the common category, making it the odd one out.

Concept Tested & Keywords

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Practise the full RML MAINS 2025

Attempt every question from this paper in a timed mock, then review the full solution for each one.