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Machine Basic Rearrangement Easy

Machine Basic Rearrangement problems present an input line of words or numbers, and through a series of steps, the machine rearranges them by moving one element per step to its correct position. You must analyze the rearrangement pattern, identify which element moves at each step, and determine the output after a specified number of steps or the complete rearrangement.

10Worksheets
200+Practice Questions
EasyDifficulty
2-3 hoursHours to Master

What You'll Learn

Introduction & Overview Why This Matters How to Solve Pro Tips & Tricks
Shortcut Methods Common Mistakes Practice Worksheets Exam Importance

Introduction to Machine Basic Rearrangement Easy

Machine Basic Rearrangement problems present an input line of words or numbers, and through a series of steps, the machine rearranges them by moving one element per step to its correct position. You must analyze the rearrangement pattern, identify which element moves at each step, and determine the output after a specified number of steps or the complete rearrangement.

Prerequisites

Understanding of sorting concepts (ascending/descending order) Ability to track element movement across steps Pattern recognition in sequential operations Basic logical deduction
Why This Matters: Machine Basic Rearrangement is the foundation of input-output reasoning. You can expect 2-3 questions in SSC CGL, 2-3 in Banking PO prelims, and 2-3 in Railways RRB exams.

How to Solve Machine Basic Rearrangement Easy Problems

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Step 1: Observe the input and the given steps to identify the rearrangement rule

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Step 2: Common patterns include: moving smallest/largest number to left/right, moving words alphabetically

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Step 3: Track which element moves at each step and where it is placed

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Step 4: For prediction questions, apply the same rule to the next step(s)

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Step 5: For final output, continue until no further rearrangement is possible

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Step 6: Verify that the pattern is consistent across all given steps

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Step 7: Present the output at the required step

Pro Strategy: Always identify what is being sorted (alphabetical order, ascending numbers, word length, etc.). In basic rearrangement, exactly one element moves to its correct position at each step. The process continues until all elements are in order.

Example Problem

Example: Input: 'cat dog bat ant'. Step1: 'ant cat dog bat' (smallest word 'ant' moved to left). Step2: 'ant bat cat dog'. Step3: 'ant bat cat dog' (no change). What is Step2? Solution: Step1: 'ant' moved to leftmost Step2: Next smallest 'bat' moved after 'ant' Answer: ant bat cat dog

Pro Tips & Tricks

  • Identify the sorting criterion: alphabetical order, ascending/descending numbers, or word length
  • Track the position of the smallest (or largest) remaining element
  • Each step typically moves one element to its final position
  • The number of steps equals the number of elements minus 1 (for selection sort style)
  • If two steps show no change, the rearrangement is complete
  • Write the sequence with positions (1,2,3...) to track movement easily

Shortcut Methods to Solve Faster

Final output = sorted(input) based on the sorting criterion
Step N output = first N elements in correct order + remaining elements in original relative order
The element that moves at step k is the k-th smallest (or largest) element
If input has 5 elements, maximum steps needed = 4

Common Mistakes to Avoid

Assuming multiple elements move in one step (only one moves in basic rearrangement)
Misidentifying the sorting order (ascending vs descending)
Forgetting that already placed elements stay in position
Not verifying the pattern with all given steps

Exam Importance

Machine Basic Rearrangement Easy is an important topic for various competitive exams. Here's how frequently it appears:

SSC CGL
2-3 questions
BANKING PO
2-3 questions
RAILWAYS RRB
2-3 questions
INSURANCE
2-3 questions

Ready to Master Machine Basic Rearrangement Easy?

Start with Worksheet 1 and work your way up to expert level! Each worksheet includes:

20 practice questions
Detailed solutions
Step-by-step explanations
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