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Rank with Group Conditions

Rank with Group Conditions problems involve ranking lists that contain multiple categories (e.g., boys and girls). Given a person's overall rank and the number of persons from a specific category before them, you must find how many from that category are after them. These problems test your ability to work with categorized ranking data.

10Worksheets
200+Practice Questions
HardDifficulty
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 Rank with Group Conditions

Rank with Group Conditions problems involve ranking lists that contain multiple categories (e.g., boys and girls). Given a person's overall rank and the number of persons from a specific category before them, you must find how many from that category are after them. These problems test your ability to work with categorized ranking data.

Prerequisites

Position from one side concepts Category counting Total = boys + girls Rank = before + self + after
Why This Matters: Rank with Group Conditions problems appear in 1-2 questions in SSC CGL and Banking PO exams. They test handling of categorized rank data.

How to Solve Rank with Group Conditions Problems

1

Step 1: Identify total persons and category counts (boys, girls)

2

Step 2: Identify the person's overall rank and category

3

Step 3: Determine how many from the same category are before them

4

Step 4: Calculate persons from same category before = given

5

Step 5: Calculate persons from same category after = total_category - before - 1

6

Step 6: For opposite category, use similar logic

7

Step 7: Present the answer

Pro Strategy: Track counts separately for each category. Use the formula: Category After = Total Category - Category Before - (1 if person belongs to that category else 0).

Example Problem

Example: In a class of 60 students (35 boys, 25 girls), Priya ranks 20th from top. There are 8 girls before her. How many girls are after her? Solution: Step 1: Total girls = 25, girls before Priya = 8 Step 2: Priya is a girl (herself counts as 1) Step 3: Girls after = Total girls - Girls before - 1 = 25 - 8 - 1 = 16 Answer: 16 girls

Pro Tips & Tricks

  • Total = Boys + Girls
  • Rank = (Persons before) + 1
  • Persons before = Boys before + Girls before
  • For a girl: Girls after = Total girls - Girls before - 1
  • For a boy: Boys after = Total boys - Boys before - 1
  • The person themselves counts as 1 in their category

Shortcut Methods to Solve Faster

Category after = Total category - Category before - (1 if person in category)
Boys before + Girls before = Rank - 1
The sum of before counts equals total before

Common Mistakes to Avoid

Forgetting to subtract the person themselves from the after count
Confusing which category the person belongs to
Not using the correct total for the category

Exam Importance

Rank with Group Conditions 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
CAT
0-1 questions
INSURANCE
1-2 questions

Ready to Master Rank with Group Conditions?

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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