If the statement "No birds are animals" is given as false, which of the…
2025
If the statement "No birds are animals" is given as false, which of the following statements can be inferred to be true?
A. Some animals are not birds.
B. Some birds are not animals.
C. Some animals are birds.
D. Some birds are animals.
Choose the most appropriate answer from the options given below:
- A.
A and B Only
- B.
C and D Only
- C.
B Only
- D.
A, B, C and D
Attempted by 46 students.
Show answer & explanation
Correct answer: B
Answer: Some animals are birds and Some birds are animals
Reasoning:
The statement "No birds are animals" is a universal negative. Its negation is an existential positive: "Some birds are animals" (there exists at least one bird that is an animal).
If some birds are animals, then some animals are birds. Therefore both "Some birds are animals" and "Some animals are birds" are true.
The statements "Some animals are not birds" and "Some birds are not animals" do not follow necessarily. For example, if every animal is a bird, then "Some animals are not birds" is false; if every bird is an animal, then "Some birds are not animals" is false. Thus these are not guaranteed by the negation.