Identify the sentence that is logically inconsistent: 1. All birds can fly. 2. Penguins are birds. 3. Penguins cannot fly. 4. Therefore, penguins are not birds.
Practice Questions
1 question
Q1
Identify the sentence that is logically inconsistent: 1. All birds can fly. 2. Penguins are birds. 3. Penguins cannot fly. 4. Therefore, penguins are not birds.
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The conclusion that 'penguins are not birds' contradicts the premise that 'penguins are birds'.
Questions & Step-by-step Solutions
1 item
Q
Q: Identify the sentence that is logically inconsistent: 1. All birds can fly. 2. Penguins are birds. 3. Penguins cannot fly. 4. Therefore, penguins are not birds.
Solution: The conclusion that 'penguins are not birds' contradicts the premise that 'penguins are birds'.
Steps: 5
Step 1: Read the first sentence: 'All birds can fly.' This means every bird should be able to fly.
Step 2: Read the second sentence: 'Penguins are birds.' This means penguins belong to the group of birds.
Step 3: Read the third sentence: 'Penguins cannot fly.' This means penguins do not follow the rule that all birds can fly.
Step 4: Read the fourth sentence: 'Therefore, penguins are not birds.' This conclusion says that since penguins cannot fly, they cannot be birds.
Step 5: Identify the inconsistency: The second sentence says penguins are birds, but the fourth sentence says they are not. This is a contradiction.
