What's the best way to master Odd Member Out quickly?

Master Odd Member Out by understanding the core concepts first, practicing regularly with our worksheets, and applying the shortcut techniques provided.

Odd Member Out (Tree)

Odd Member Out problems present a set of family members and ask you to identify the person who does not belong (e.g., is from a different branch, generation, or has a different relationship to the others). These problems test your ability to classify family members by their position in the tree.

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 Odd Member Out (Tree)

Prerequisites

Family tree construction Generational level identification Branch identification Relationship comparison

Why This Matters: Odd Member Out problems appear in 0-1 questions in SSC CGL and Banking exams. They test classification and comparison skills.

How to Solve Odd Member Out (Tree) Problems

Step 1: Build the family tree from given statements.

Step 2: Identify the common property shared by most members.

Step 3: Possible properties: same generation, same branch, same relationship to a common ancestor.

Step 4: The odd member is the one who does not share that property.

Step 5: Verify that all other members share the common property.

Step 6: Answer with the odd member.

Pro Strategy: Look for the person who is not a blood relative, is in a different generation, or is from a different branch of the family. The odd member often has a different relationship type.

Example Problem

Example: Family tree: P and Q are siblings. R is child of P. S is child of Q. T is spouse of P. Who is the odd one out? Solution: Step 1: P and Q are siblings (same generation). Step 2: R and S are children (same generation). Step 3: T is spouse of P (different generation from children, different relationship). Step 4: T does not share blood relation with others. Answer: T is the odd one out.

Pro Tips & Tricks

Check generation first—someone in a different generation may be the odd one.
Check blood relation—in-laws are often the odd ones.
Check branch—someone from a different branch may be the odd one.
Check parent-child relationship—someone who is a parent vs child.
The odd member may be the only one without a specific relationship.
Sometimes the odd member is the only one with a spouse.

Shortcut Methods to Solve Faster

If most are blood relatives, the in-law is odd.

If most are children, the parent is odd.

If most are siblings, the cousin is odd.

The odd member often has a unique relationship to the root.

Common Mistakes to Avoid

Choosing the wrong common property.

Not checking all possible properties.

Assuming the odd one is always a non-blood relative.

Overlooking that multiple members could be odd in different ways.

Practice Worksheets

Practice makes perfect! Work through these worksheets to master Odd Member Out (Tree). 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