Generation Count

Generation Count problems ask for the number of generations between two persons in a family tree. For example, grandparents are 2 generations above grandchildren. These problems test your ability to measure generational distance in a family hierarchy.

10Worksheets
200+Practice Questions
Beginner to IntermediateDifficulty
1-2 hoursHours to Master

Introduction to Generation Count

Generation Count problems ask for the number of generations between two persons in a family tree. For example, grandparents are 2 generations above grandchildren. These problems test your ability to measure generational distance in a family hierarchy.

Prerequisites

Understanding of generations Family tree levels Counting generational gaps Ancestor-descendant relationships
Why This Matters: Generation Count problems appear in 1-2 questions in SSC CGL and Banking PO exams. They test understanding of generational levels.

How to Solve Generation Count Problems

1

Step 1: Identify the two persons in the family tree

2

Step 2: Determine the generation level of each person (assign numbers: 1, 2, 3, etc.)

3

Step 3: Count how many generations separate them (absolute difference in generation numbers)

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Step 4: If one is ancestor of the other, the count is the number of steps down the tree

5

Step 5: If they are in different branches, go up to common ancestor then down

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Step 6: The generation count is the number of parent-child steps between them

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Step 7: Present the generation gap number

Pro Strategy: Assign generation numbers starting from 1 for the oldest generation. The generation gap is the difference in these numbers. For non-ancestor relationships, find the common ancestor and sum the gaps.

Example Problem

Example: How many generations apart are a person and their great-grandparent? Solution: Step 1: Great-grandparent is 3 generations above (great-grandparent → grandparent → parent → self) Step 2: Generation gap = 3 Answer: 3 generations

Pro Tips & Tricks

  • Parent-child: 1 generation gap
  • Grandparent-grandchild: 2 generations gap
  • Great-grandparent: 3 generations gap
  • Siblings: 0 generations gap (same generation)
  • Cousins: 0 generations gap (same generation, different branches)
  • Aunt/Uncle to niece/nephew: 1 generation gap

Shortcut Methods to Solve Faster

Count the number of 'great-' prefixes + 1 for grandparent relationships
Great-grandparent = 3 generations (great = 3)
Great-great-grandparent = 4 generations
First cousins share grandparents → 2 steps up, 2 steps down = 4 steps total, but generation gap is 0

Common Mistakes to Avoid

Counting total steps instead of generation gap (steps vs generations)
Confusing 'generations apart' with 'steps in family tree'
Counting cousins as having a generation gap (they are same generation)
Forgetting that siblings are same generation

Exam Importance

Generation Count is an important topic for various competitive exams. Here's how frequently it appears:

SSC CGL
1-2 questions
BANKING PO
1-2 questions
RAILWAYS RRB
1-2 questions
INSURANCE
1-2 questions

Ready to Master Generation Count?

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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