Must Be True Classification Beginner-Intermediate Worksheet: Focus on common variations practice Must Be True Classification BEGINNER INTERMEDIATE

Level up your Must Be True Classification skills! You're at Worksheet 4 of 10 (33% through this series). This step-up challenge worksheet features 20 beginner-intermediate-level problems with a focus on common variations practice. Topics covered: must be true classification for competitive exams, how to solve must be true classification, must be true classification tricks.

📝 Worksheet 4 of 10 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner Intermediate level

What you'll learn in this worksheet:

Understand the logic behind how to solve must be true classification
Learn step-by-step approaches to common variations practice
Bridge the gap between basic and advanced concepts
Handle problems with increasing complexity
Master must be true classification for competitive exams through focused practice

Your progress through Must Be True Classification

Worksheet 4 of 10 (33% complete)

Question 1

Premises: If it's raining, the ground is wet. The ground is not wet. Statement: It is not raining Based only on the premises, is this statement:

Must be true — If it were raining, ground would be wet (modus tollens)

Question 2

Premises: All students who passed the exam studied at least 10 hours. John studied 15 hours. Mary studied 5 hours. Sarah studied 10 hours exactly. Statement: Mary did not pass the exam Based only on the premises, is this statement:

Could be true — She studied less than 10 hours, so she cannot have passed given the premise

Question 3

Premises: All students who passed the exam studied at least 10 hours. John studied 15 hours. Mary studied 5 hours. Sarah studied 10 hours exactly. Statement: Sarah passed the exam Based only on the premises, is this statement:

Could be true — She meets the study requirement, but passing isn't guaranteed

Question 4

Premises: If it's raining, the ground is wet. The ground is not wet. Statement: Someone watered the lawn Based only on the premises, is this statement:

Could be true — Ground could be wet from other causes, but it's not wet, so unlikely

Question 5

Premises: If it's raining, the ground is wet. The ground is not wet. Statement: It could be raining but the ground dried quickly Based only on the premises, is this statement:

Must be false — Premise says 'if raining → ground wet' with no time delay specified

Question 6

Premises: All students who passed the exam studied at least 10 hours. John studied 15 hours. Mary studied 5 hours. Sarah studied 10 hours exactly. Statement: No one who studied less than 10 hours passed Based only on the premises, is this statement:

Must be true — This is exactly what the premise states (contrapositive)

Question 7

Premises: If it's raining, the ground is wet. The ground is not wet. Statement: Someone watered the lawn Based only on the premises, is this statement:

Could be true — Ground could be wet from other causes, but it's not wet, so unlikely

Question 8

Premises: Some doctors are researchers. No researchers are lazy. All lazy people are unhappy. Statement: Some unhappy people are not doctors Based only on the premises, is this statement:

Must be true — Lazy people are unhappy, but they aren't researchers; they could be doctors or not

Question 9

Premises: Some doctors are researchers. No researchers are lazy. All lazy people are unhappy. Statement: Some doctors are not lazy Based only on the premises, is this statement:

Must be true — Some doctors are researchers, and no researchers are lazy

Question 10

Premises: If it's raining, the ground is wet. The ground is not wet. Statement: It could be raining but the ground dried quickly Based only on the premises, is this statement:

Must be false — Premise says 'if raining → ground wet' with no time delay specified

Question 11

Premises: If it's raining, the ground is wet. The ground is not wet. Statement: Someone watered the lawn Based only on the premises, is this statement:

Could be true — Ground could be wet from other causes, but it's not wet, so unlikely

Question 12

Premises: If it's raining, the ground is wet. The ground is not wet. Statement: It could be raining but the ground dried quickly Based only on the premises, is this statement:

Must be false — Premise says 'if raining → ground wet' with no time delay specified

Question 13

Premises: All students who passed the exam studied at least 10 hours. John studied 15 hours. Mary studied 5 hours. Sarah studied 10 hours exactly. Statement: Mary definitely failed Based only on the premises, is this statement:

Must be true — Premise says ALL who passed studied ≥10 hours. Mary studied 5 hours, so she cannot have passed

Question 14

Premises: Some doctors are researchers. No researchers are lazy. All lazy people are unhappy. Statement: Some doctors are not lazy Based only on the premises, is this statement:

Must be true — Some doctors are researchers, and no researchers are lazy

Question 15

Must be true — This is exactly what the premise states (contrapositive)

Question 16

Premises: Some doctors are researchers. No researchers are lazy. All lazy people are unhappy. Statement: Some doctors are not lazy Based only on the premises, is this statement:

Must be true — Some doctors are researchers, and no researchers are lazy

Question 17

Premises: Some doctors are researchers. No researchers are lazy. All lazy people are unhappy. Statement: No doctors are lazy Based only on the premises, is this statement:

Could be true — We only know some doctors aren't lazy; others might be

Question 18

Must be true — Premise says ALL who passed studied ≥10 hours. Mary studied 5 hours, so she cannot have passed

Question 19

Premises: If it's raining, the ground is wet. The ground is not wet. Statement: It could be raining but the ground dried quickly Based only on the premises, is this statement:

Must be false — Premise says 'if raining → ground wet' with no time delay specified

Question 20

Could be true — She meets the study requirement, but passing isn't guaranteed

📝 Continue your Must Be True Classification practice. Worksheet 4 focuses on common variations practice.

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