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Train Platform Allocation - Expert Level: conceptual clarity Train Platform Allocation EXPERT

This skill evaluation ⚡ worksheet focuses on Train Platform Allocation - a key topic in Scheduling. You'll solve 20 expert-level problems (Worksheet 9 of 10). The primary focus is on conceptual clarity. Master train platform allocation ssc cgl, train platform allocation reasoning tricks, and fast train platform allocation solving through systematic practice.

📝 Worksheet 9 of 10 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Expert level

What you'll learn in this worksheet:
Your progress through Train Platform Allocation
Worksheet 9 of 10 (88% complete)

Question 1

Trains and their scheduled times (arrival, departure): - Train 1: 3:00 → 7:00 - Train 2: 4:00 → 5:00 - Train 5: 10:00 → 13:00 - Train 6: 14:00 → 16:00 - Train 4: 15:00 → 18:00 - Train 3: 19:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 2

Trains and their scheduled times (arrival, departure): - Train 2: 3:00 → 4:00 - Train 1: 7:00 → 8:00 - Train 4: 12:00 → 14:00 - Train 3: 15:00 → 18:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 3

Trains and their scheduled times (arrival, departure): - Train 3: 1:00 → 4:00 - Train 5: 4:00 → 8:00 - Train 4: 8:00 → 9:00 - Train 1: 13:00 → 16:00 - Train 2: 16:00 → 20:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 4

Trains and their scheduled times (arrival, departure): - Train 1: 6:00 → 10:00 - Train 4: 7:00 → 11:00 - Train 5: 8:00 → 10:00 - Train 2: 13:00 → 17:00 - Train 3: 18:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 3

Answer: 3 platforms

Question 5

Trains and their scheduled times (arrival, departure): - Train 1: 0:00 → 3:00 - Train 3: 6:00 → 9:00 - Train 5: 6:00 → 10:00 - Train 4: 9:00 → 12:00 - Train 6: 11:00 → 12:00 - Train 2: 20:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 6

Trains and their scheduled times (arrival, departure): - Train 4: 0:00 → 2:00 - Train 2: 6:00 → 9:00 - Train 1: 10:00 → 13:00 - Train 3: 16:00 → 20:00 - Train 5: 20:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 7

Trains and their scheduled times (arrival, departure): - Train 4: 10:00 → 13:00 - Train 2: 11:00 → 15:00 - Train 1: 13:00 → 16:00 - Train 5: 16:00 → 17:00 - Train 3: 17:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 8

Trains and their scheduled times (arrival, departure): - Train 4: 3:00 → 7:00 - Train 3: 11:00 → 12:00 - Train 1: 14:00 → 18:00 - Train 2: 18:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 9

Trains and their scheduled times (arrival, departure): - Train 5: 6:00 → 7:00 - Train 3: 7:00 → 11:00 - Train 4: 11:00 → 13:00 - Train 1: 17:00 → 19:00 - Train 2: 17:00 → 20:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 10

Trains and their scheduled times (arrival, departure): - Train 2: 8:00 → 9:00 - Train 1: 11:00 → 15:00 - Train 3: 13:00 → 16:00 - Train 4: 13:00 → 15:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 3

Answer: 3 platforms

Question 11

Trains and their scheduled times (arrival, departure): - Train 2: 4:00 → 5:00 - Train 3: 6:00 → 8:00 - Train 4: 13:00 → 15:00 - Train 1: 19:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 12

Trains and their scheduled times (arrival, departure): - Train 1: 2:00 → 6:00 - Train 2: 2:00 → 4:00 - Train 4: 5:00 → 8:00 - Train 5: 9:00 → 13:00 - Train 3: 11:00 → 15:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 13

Trains and their scheduled times (arrival, departure): - Train 1: 0:00 → 2:00 - Train 5: 4:00 → 8:00 - Train 2: 12:00 → 15:00 - Train 3: 13:00 → 16:00 - Train 4: 18:00 → 22:00 - Train 6: 18:00 → 22:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 14

Trains and their scheduled times (arrival, departure): - Train 2: 0:00 → 3:00 - Train 5: 3:00 → 5:00 - Train 3: 5:00 → 9:00 - Train 1: 14:00 → 17:00 - Train 4: 18:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 15

Trains and their scheduled times (arrival, departure): - Train 4: 0:00 → 3:00 - Train 2: 18:00 → 20:00 - Train 1: 20:00 → 24:00 - Train 3: 20:00 → 23:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 16

Trains and their scheduled times (arrival, departure): - Train 3: 3:00 → 7:00 - Train 6: 4:00 → 5:00 - Train 2: 6:00 → 8:00 - Train 5: 14:00 → 15:00 - Train 4: 16:00 → 19:00 - Train 1: 19:00 → 22:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 17

Trains and their scheduled times (arrival, departure): - Train 3: 1:00 → 3:00 - Train 5: 1:00 → 2:00 - Train 6: 9:00 → 12:00 - Train 2: 12:00 → 16:00 - Train 4: 13:00 → 16:00 - Train 1: 16:00 → 19:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 18

Trains and their scheduled times (arrival, departure): - Train 4: 1:00 → 5:00 - Train 5: 2:00 → 3:00 - Train 3: 5:00 → 9:00 - Train 2: 11:00 → 14:00 - Train 6: 11:00 → 13:00 - Train 1: 19:00 → 22:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 19

Trains and their scheduled times (arrival, departure): - Train 3: 3:00 → 7:00 - Train 2: 7:00 → 10:00 - Train 4: 8:00 → 9:00 - Train 1: 13:00 → 16:00 - Train 5: 16:00 → 19:00 - Train 6: 18:00 → 22:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms

Question 20

Trains and their scheduled times (arrival, departure): - Train 3: 3:00 → 4:00 - Train 2: 5:00 → 8:00 - Train 4: 14:00 → 17:00 - Train 1: 20:00 → 21:00 What is the minimum number of platforms needed to avoid conflicts?
Step-by-step solution:

1. Sort trains by arrival time
2. Greedy platform allocation
3. Maximum overlapping trains: 2

Answer: 2 platforms
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