INPUT & OUTPUT

The section of Input Output reasoning questions assesses the ability to recognize and/or apply logical patterns in a rapid and accurate manner. These questions typically involve presenting an initial input, which candidates must process systematically, akin to a machine, to generate a corresponding output. Candidates are required to understand this processing mechanism and manipulate or utilize the provided data accordingly.

Candidates will receive instructions indicating that processing must be executed based on a given example input. Subsequently, a new input will be presented, and candidates are tasked with producing the output, which may involve multiple stages or specific steps, following the provided example.

This article will delve into the fundamental concepts of the Input Output reasoning section, offering solved examples, practice questions, as well as tips and tricks. It is recommended to thoroughly go through the article to address any uncertainties related to this topic

What is Input Output Reasoning?

Input-Output Reasoning, also known as Coding-Decoding or Machine Input-Output, is a type of logical reasoning commonly found in competitive exams and aptitude tests. It involves analyzing a series of operations performed on a set of inputs to determine the final output. The objective is to understand the underlying pattern or rule governing the transformation of the inputs into outputs.

Here's a brief overview of the typical elements involved in Input-Output Reasoning:

1. Inputs: The initial set of data or information provided in the problem.

2. Operations: A series of steps or operations are applied to the inputs according to a specific rule or pattern.

3. Output: The final result obtained after applying the operations to the inputs.

4. Rules or Patterns: Understanding the rules governing the transformation of inputs to outputs is crucial for solving Input-Output reasoning problems.

5. Symbolic Representation: Often, inputs and outputs are represented using symbols or codes.

6. Coding and Decoding: The process of understanding and applying the rules to decipher the relationship between inputs and outputs.

The steps involved in Input-Output Reasoning often include rearranging, modifying, or transforming the given inputs based on specific rules. Candidates are then required to apply the same rules to decode or determine the final output.

Example: Consider the input series: B 4 H Q 8 C The rule might be to skip one letter and insert the next number. Applying this rule:

• B → 4 (skipping one letter, next is 4)
• 4 → H (skipping one number, next is H)
• H → Q (skipping one letter, next is Q)
• Q → 8 (skipping one letter, next is 8)
• 8 → C (skipping one number, next is C)

So, the output would be: 4 HQ8C