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Master Contrapositive Inference - Beginner Level Problems Contrapositive Inference BEGINNER

Excel in competitive exams with this skill builder ⚡ worksheet on Contrapositive Inference. Worksheet 3 of 10 contains 20 beginner-level problems. Target your step-by-step problem solving skills while practicing contrapositive inference practice, contrapositive inference for competitive exams, and how to solve contrapositive inference.

📝 Worksheet 3 of 10 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner level

What you'll learn in this worksheet:
Your progress through Contrapositive Inference
Worksheet 3 of 10 (22% complete)

Question 1

Rule: If you water plants, they grow Observation: The plants didn't grow What can you logically infer?
This uses the contrapositive rule. The statement "If you water plants, they grow" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The plants didn't grow" (the consequence is false), we can conclude "They weren't watered" (the condition is false).

Question 2

Rule: If you eat sugar, your energy increases Observation: Tom's energy didn't increase What can you logically infer?
This uses the contrapositive rule. The statement "If you eat sugar, your energy increases" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "Tom's energy didn't increase" (the consequence is false), we can conclude "Tom didn't eat sugar" (the condition is false).

Question 3

Rule: If you water plants, they grow Observation: The plants didn't grow What can you logically infer?
This uses the contrapositive rule. The statement "If you water plants, they grow" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The plants didn't grow" (the consequence is false), we can conclude "They weren't watered" (the condition is false).

Question 4

Rule: If the store is open, lights are on Observation: The lights are off What can you logically infer?
This uses the contrapositive rule. The statement "If the store is open, lights are on" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The lights are off" (the consequence is false), we can conclude "The store is closed" (the condition is false).

Question 5

Rule: If you water plants, they grow Observation: The plants didn't grow What can you logically infer?
This uses the contrapositive rule. The statement "If you water plants, they grow" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The plants didn't grow" (the consequence is false), we can conclude "They weren't watered" (the condition is false).

Question 6

Rule: If the store is open, lights are on Observation: The lights are off What can you logically infer?
This uses the contrapositive rule. The statement "If the store is open, lights are on" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The lights are off" (the consequence is false), we can conclude "The store is closed" (the condition is false).

Question 7

Rule: If you're over 18, you can vote Observation: Sarah cannot vote What can you logically infer?
This uses the contrapositive rule. The statement "If you're over 18, you can vote" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "Sarah cannot vote" (the consequence is false), we can conclude "Sarah is under 18" (the condition is false).

Question 8

Rule: If you water plants, they grow Observation: The plants didn't grow What can you logically infer?
This uses the contrapositive rule. The statement "If you water plants, they grow" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The plants didn't grow" (the consequence is false), we can conclude "They weren't watered" (the condition is false).

Question 9

Rule: If you exercise regularly, you stay healthy Observation: John is not healthy What can you logically infer?
This uses the contrapositive rule. The statement "If you exercise regularly, you stay healthy" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "John is not healthy" (the consequence is false), we can conclude "John doesn't exercise regularly" (the condition is false).

Question 10

Rule: If the store is open, lights are on Observation: The lights are off What can you logically infer?
This uses the contrapositive rule. The statement "If the store is open, lights are on" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The lights are off" (the consequence is false), we can conclude "The store is closed" (the condition is false).

Question 11

Rule: If it's a dog, it has fur Observation: Max doesn't have fur What can you logically infer?
This uses the contrapositive rule. The statement "If it's a dog, it has fur" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "Max doesn't have fur" (the consequence is false), we can conclude "Max is not a dog" (the condition is false).

Question 12

Rule: If you eat sugar, your energy increases Observation: Tom's energy didn't increase What can you logically infer?
This uses the contrapositive rule. The statement "If you eat sugar, your energy increases" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "Tom's energy didn't increase" (the consequence is false), we can conclude "Tom didn't eat sugar" (the condition is false).

Question 13

Rule: If you eat sugar, your energy increases Observation: Tom's energy didn't increase What can you logically infer?
This uses the contrapositive rule. The statement "If you eat sugar, your energy increases" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "Tom's energy didn't increase" (the consequence is false), we can conclude "Tom didn't eat sugar" (the condition is false).

Question 14

Rule: If the store is open, lights are on Observation: The lights are off What can you logically infer?
This uses the contrapositive rule. The statement "If the store is open, lights are on" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The lights are off" (the consequence is false), we can conclude "The store is closed" (the condition is false).

Question 15

Rule: If it's a square, it has four sides Observation: This shape doesn't have four sides What can you logically infer?
This uses the contrapositive rule. The statement "If it's a square, it has four sides" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "This shape doesn't have four sides" (the consequence is false), we can conclude "This is not a square" (the condition is false).

Question 16

Rule: If the store is open, lights are on Observation: The lights are off What can you logically infer?
This uses the contrapositive rule. The statement "If the store is open, lights are on" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The lights are off" (the consequence is false), we can conclude "The store is closed" (the condition is false).

Question 17

Rule: If the store is open, lights are on Observation: The lights are off What can you logically infer?
This uses the contrapositive rule. The statement "If the store is open, lights are on" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The lights are off" (the consequence is false), we can conclude "The store is closed" (the condition is false).

Question 18

Rule: If you water plants, they grow Observation: The plants didn't grow What can you logically infer?
This uses the contrapositive rule. The statement "If you water plants, they grow" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "The plants didn't grow" (the consequence is false), we can conclude "They weren't watered" (the condition is false).

Question 19

Rule: If you exercise regularly, you stay healthy Observation: John is not healthy What can you logically infer?
This uses the contrapositive rule. The statement "If you exercise regularly, you stay healthy" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "John is not healthy" (the consequence is false), we can conclude "John doesn't exercise regularly" (the condition is false).

Question 20

Rule: If it's a dog, it has fur Observation: Max doesn't have fur What can you logically infer?
This uses the contrapositive rule. The statement "If it's a dog, it has fur" is logically equivalent to its contrapositive: 'If NOT consequence, then NOT condition.' Since we observe "Max doesn't have fur" (the consequence is false), we can conclude "Max is not a dog" (the condition is false).
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