Number Pairing for IBPS PO 2025, Download Free PDF

Number Pairing is a scoring topic in the Reasoning Ability section of IBPS PO Prelims. In this type of question, you are given a number (or sometimes a letter sequence), and you need to identify how many such pairs follow a certain order, either forward, backward, or both. These questions check your observation skills and attention to detail. They are quick to solve once you understand the pattern, making them ideal for boosting your speed in the exam. Download our free PDF with practice questions and explanations to strengthen your preparation for IBPS PO 2025.

What is Number Pairing?

Number Pairing is a common Reasoning topic where you are given a number or a series of numbers, and you must identify specific digit pairs based on certain conditions, like how many such pairs exist in the same order as in the alphabet or number system. These questions test your observation and pattern recognition skills and are often asked in IBPS PO Prelims.

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Number Pairing Important Questions For IBPS PO 2025

Here are some most expected questions of number pairing, which is part of the reasoning section. Have a look.

Question 1: If we arrange all the digits of the number 4536925730 in ascending order from the left end then position of how many digit(s) will remain unchanged?A) NoneB) OneC) TwoD) ThreeE) None of the aboveQuestion 2: If each of the digits in the number ‘9248967543’ is subtracted by 1, and then arranged in descending order(from left to right) then what is the sum of the last 4 digits from the left side of the new number thus formed?A) 8B) 7C) 10D) 9E) None of the aboveQuestion 3: When the digits, which are odd in the number ‘87346352’ are increased by 1 and the remaining digits are decreased by 2, then what is the sum of 2^nd digit from the right end and 3^rd digit from the left end of the rearranged number?A) 9B) 8C) 12D) 10E) None of theseQuestion 4: How many such digits are there in the number ‘798428765’ which remains at the same position when they are arranged in ascending order from right to left?A) OneB) ThreeC) TwoD) NoneE) FourQuestion 5: If in the number 8767953645, position of the first and the last digit is interchanged, position of the second and the 2^nd last digit is interchanged and so on till the position of the 5^th and 5^th last digit is interchanged, then which digit is third to the left of the one, which is third from the right end, after the rearrangement?A) 6B) 9C) 8D) 5

Tips to Solve Number Pairing & Rearrangement Questions

1. Read the Condition Carefully

• Understand what transformation needs to be applied (e.g., sorting, adding/subtracting digits, reversing order).
  
• Check if it’s ascending/descending, from left/right, or involves odd/even digits.
  

2. Note the Original Number Clearly

• Write the given number clearly on paper or your rough sheet.
  
• Break it into individual digits and label their positions if needed.
  

3. For Position-Based Rearrangement Questions:

• Rearrange the number as instructed (e.g., ascending from left or right).
  
• Compare the position of digits before and after the arrangement.
  
• Count how many digits remained unchanged in position.
  

4. For Digit-Based Transformation (Addition/Subtraction):

• Apply the given rule to each digit:
  
  • E.g., odd +1, even -2.
    
• Write the new number after modification.
  
• Then proceed to solve the actual question (sum, position, comparison).
  

5. For Interchanging Positions:

• Carefully swap the digits as instructed (first ↔ last, second ↔ second-last, etc.).
  
• Redraw the number after changes.
  
• Use clear marking (L1 ↔ R1, L2 ↔ R2) if needed to avoid confusion.
  

6. Use Elimination in Options

• For position and sum-based questions, back-solve with options if you’re short on time.
  
• Eliminate options that are not close to what you observe.
  

7. Practice Regularly

• These questions are tricky only if you’re not used to handling them.
  
• With practice, solving becomes visual and quick.
  

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