What's the best way to master Reverse Number Analogy quickly?

Master Reverse Number Analogy by understanding the core concepts first, practicing regularly with our worksheets, and applying the shortcut techniques provided.

Reverse Number Analogy

Reverse Number Analogy problems involve number pairs where the second number is the reverse of the digits of the first number. For example, in the pair 123:321, the relationship is reversing the digits. You may also encounter reverse then add/subtract patterns. These problems test digit manipulation and number sense.

10Worksheets

200+Practice Questions

IntermediateDifficulty

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 Reverse Number Analogy

Prerequisites

Understanding of digit reversal Place value concepts Basic arithmetic Number digit extraction

Why This Matters: Reverse Number Analogy problems appear in 1-2 questions in SSC CGL and Banking PO exams. They test digit reversal skills and pattern recognition.

How to Solve Reverse Number Analogy Problems

Step 1: Identify the two numbers in the given analogy pair (A:B)

Step 2: Reverse the digits of A to get R

Step 3: Check if B equals R (or R with additional operation)

Step 4: Common variations: B = reverse(A) ± k, or B = reverse(A ± k)

Step 5: Apply the same operation to the second pair's first number

Step 6: Verify the pattern with all given examples

Step 7: Present the answer

Pro Strategy: Write the number and reverse the digit order. For numbers ending with zero, reversing changes the number of digits (e.g., 120 reversed is 021 = 21). Consider whether leading zeros are dropped.

Example Problem

Example: 123 : 321 :: 456 : ? Solution: Step 1: First pair: 123 and 321 Step 2: Reverse of 123 is 321 Step 3: Relationship: Second number is reverse of first Step 4: Apply to 456: Reverse of 456 is 654 Answer: 654

Pro Tips & Tricks

Reverse of 123 = 321, reverse of 456 = 654, reverse of 789 = 987
Palindromes (like 121, 232) reverse to themselves
For numbers ending with zero: 120 reversed = 21 (leading zero dropped)
Two-digit numbers: 73 reversed = 37
Three-digit numbers: 504 reversed = 405
Variations: reverse(A) + A, reverse(A) - A, reverse(A + k)

Shortcut Methods to Solve Faster

Reverse of A = int(str(A)[::-1])

If A:B with B = reverse(A), then answer = reverse(C)

For two-digit numbers: reverse(10a+b) = 10b+a

For three-digit numbers: reverse(100a+10b+c) = 100c+10b+a

Common Mistakes to Avoid

Not dropping leading zeros (e.g., 120 reversed = 21, not 021)

Confusing reverse with palindrome (reverse of palindrome is same number)

Forgetting to apply additional operations (like addition after reversal)

Reversing digits incorrectly (order matters)

Practice Worksheets

Practice makes perfect! Work through these worksheets to master Reverse Number Analogy. Each worksheet contains 20 questions with detailed explanations. Start from Worksheet 1 and progress through increasing difficulty levels.

Worksheet 1 Beginner Beginner level - Perfect for building foundational understanding

Worksheet 2 Beginner Beginner level - Perfect for building foundational understanding

Worksheet 3 Beginner Beginner level - Perfect for building foundational understanding

Worksheet 4 Intermediate Intermediate level - Test your understanding with moderate difficulty

Worksheet 5 Intermediate Intermediate level - Test your understanding with moderate difficulty

Worksheet 6 Intermediate Intermediate level - Test your understanding with moderate difficulty

Worksheet 7 Advanced Advanced level - Challenge yourself with complex problems

Worksheet 8 Advanced Advanced level - Challenge yourself with complex problems

Worksheet 9 Advanced Advanced level - Challenge yourself with complex problems

Worksheet 10 Advanced Advanced level - Challenge yourself with complex problems