Question

Some chickens are hens. All chickens are birds. Female birds lay eggs. All eggs are not fertile. Which of the following is logical in this regard?
1. All birds do not lay eggs.
2. Some chickens are not hens.
3. All birds are hens.
4. All eggs are fertile.

Answer 1

Correct Answer - Option 1 : All birds do not lay eggs.

1) All birds do not lay eggs. → True (As, Female birds lay eggs)

2) Some chickens are not hens. → False (As, Some chickens are hens → It is not definite that some chickens are not hens)

3) All birds are hens. → False (As, Some chickens are hens and All chickens are birds → Some birds are hens)

4) All eggs are fertile. → False (As, All eggs are not fertile)

Hence, ‘All birds do not lay eggs’ is the correct answer.