Machine Input Output Questions for IBPS PO Mains

Last updated: June 2, 2026. For coaching and doubts, contactShortcut Maths, Jadavpur, Kolkata 700032. Call+91-9804490328.

What is Machine Input Output in Bank PO

Machine Input Output is a reasoning topic where a machine rearranges a given input following a specific pattern across multiple steps. You need to identify the logic and answer questions based on it.

In IBPS PO Mains, 5 questions (1 set) are asked from Input Output. It can be a scoring area if you identify the pattern quickly.

Types of Input Output Questions

Word Arrangement: Words arranged alphabetically or by length
Number Arrangement: Numbers arranged in ascending/descending order
Mixed: Both words and numbers
New Pattern: Mathematical operations on numbers, letter shifting

Word Arrangement Pattern

In this type, words are arranged alphabetically either from left to right or right to left.

Input: tiger lion elephant zebra monkey

Step 1: elephant tiger lion zebra monkey (elephant first alphabetically)

Step 2: elephant lion tiger zebra monkey (lion next)

Step 3: elephant lion monkey tiger zebra

Step 4: elephant lion monkey tiger zebra (final)

Number Arrangement Pattern

Numbers arranged in ascending or descending order, or by sum of digits, or by even/odd.

Input: 45 23 67 12 89 34

Step 1: 89 45 23 67 12 34 (largest first)

Step 2: 89 67 45 23 12 34

Step 3: 89 67 45 34 23 12

Mixed Word + Number

Words arranged alphabetically on one side, numbers on the other.

Input: cat 45 dog 23 apple 67

Step 1: apple cat 45 dog 23 67 (word + number)

New Pattern Input Output

Recent exams have introduced new patterns:

Mathematical operation: Add/subtract numbers
Letter shifting: Each letter shifted by +1 or -1
Vowel-consonant: Vowels arranged separately

Practice Questions

Q1. Input: 24 56 12 78 34 89

Step 1: 89 24 56 12 78 34

Step 2: 89 78 24 56 12 34

Which number will be at 3rd position from left in Step 3?

Ans: Step 3: 89 78 56 24 12 34. 3rd position = 56

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FAQs

Usually 5 questions (1 set) in IBPS PO Mains. Sometimes 0 in Prelims.

Target 4-5 minutes. If pattern is unclear in 2 minutes, skip and return later.

Last updated: June 02, 2026. Call +91-9804490328.

LinkedIn: Input Output Guide
Medium: Input Output Tricks

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