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Input-Output Practice Questions with Detailed Solutions – Level 3

Level 3 input-output reasoning on word, number and mixed machine arrangements, from finding a given step or the last step to working from a later step of a new input.

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Questions, answer key and solutions.

Questions
50
Duration
60 min
Marks
50

Negative marking

Attempts
100
Access
Free
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Normal practice, or a Simulated test

Both use the same questions. Normal practice is untimed and needs no account: choose an option and the answer and solution appear at once. The Simulated test is the real computer-based format, with one 60-minute clock, a question palette and full screen, and your score, the key and the solutions arrive when you submit.

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How the two modes differ
No account needed

Normal

Untimed

Every question on one page, loading as you scroll. Choose an option and see straight away whether it was right.

  • No timer. Nothing to start and nothing to submit. Stop whenever you like.
  • Answered as you choose. Tap an option and it is marked at once, with the correct answer shown.
  • Solutions in place. The explanation, and the video where one has been added, sit under the question.
  • Open to guests. Normal practice needs no sign-in.
Real exam conditions

Simulated

Timed CBT

The computer-based test format: one clock, a question palette, and a score the moment you submit.

  • A clock that does not pause. 60 minutes from the moment you begin, and the paper is submitted for you when it reaches zero.
  • Question palette. Answered, not answered and marked for review, section by section, as the real interface has it.
  • Full screen, proctored. The test takes over the screen; leaving it three times submits the paper.
  • Answers hidden until you submit. The key, the explanations and your score all arrive together at the end.

About this test

Input-Output Reasoning Level 3: Word and Number Machine Arrangement Questions

These Level 3 input-output questions test whether you can decode the fixed rule a machine uses to rearrange a line of words, numbers or both, one step at a time. In this Aptitude360 set you study an illustration, then apply the same rule to a new input to identify a particular step, the final step or an earlier arrangement. Each question has a step-by-step solution.

What this input-output set covers

  • Word arrangement machines that reorder a line of words
  • Number arrangement machines, including lines of three-digit numbers rearranged one number per step
  • Mixed lines of words and numbers rearranged together
  • Identifying a specific step, such as a middle step, for a new input
  • Finding which step will be the last step of an arrangement
  • Working from a given later step of a different input, or from an input with its first two steps

General input-output concepts to revise

  • Shifting patterns, where one element moves per step and the rest slide along
  • Swapping patterns, where two elements exchange positions
  • Elements that are already in their correct position and need no step
  • Whether unmoved elements keep their original relative order

Preparation tips for machine arrangement questions

  • Compare the input with the final step of the illustration to see the target order first
  • Then check the first two steps to see which element moves and where
  • When given a later step, undo one step at a time rather than guessing the input

Who this set is for

It suits reasoning aspirants who already handle basic input-output patterns and want harder machine arrangement practice.

FAQs about Input-Output Practice Questions with Detailed Solutions – Level 3

What is input output in reasoning?
Input-output is a reasoning topic where a machine rearranges a line of words or numbers step by step using a fixed rule. You find the rule from an illustration and apply it to a new input.
How do you solve input output reasoning questions?
Compare the input with the final step to see the overall order, then check how one element moves in each step. Also note whether the other elements keep their relative order.
How do you find the input from a given step in input output?
Work backwards by reversing the rule one step at a time. If several inputs could lead to the same step, the question usually asks which option is possible.
What is the difference between shifting and swapping in input output?
In shifting, one element moves to a new position and the others slide to fill the gap. In swapping, two elements exchange positions while the rest stay where they are.

Test structure

How the paper is split, and how long each part runs. A section you have finished cannot be returned to.

SectionQuestionsTime
Input-Output Level 35060 min

Marking & rules

Total marks
50 across 50 questions.
Negative marking
A wrong answer costs marks. Leaving a question unanswered costs nothing.
Attempts
100 in total. An attempt is spent the moment you begin one.

What you get when you submit

The analysis is ready the moment you submit the paper.

Score and accuracy

Marks, percentage, right, wrong and skipped, and the time you took.

Section by section

The same figures for each section, so a weak one cannot hide in an average.

The full answer key

Every question with your answer, the right one, the working, and the video where there is one.

Where you stand

Your score against the spread of everyone else who has sat this test.

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