Page:Carroll - Game of Logic.djvu/78

62 8. No $$x$$ are $y$. i. e. No good riddles are hard.

9.. Some $$x$$ are $y^\prime$. i. e. Some lobsters are unselfish.

10. No $$x$$ are $y$. i. e. No lobsters are selfish.

11. All $$x$$ are $y^\prime$. i. e. All lobsters are unselfish.

12. Some $$x$$ are $y$, and some are $y^\prime$. i. e. Some lobsters are selfish, and some are unselfish.

13. All $$y^\prime$$ are $x^\prime$. i. e. All invalids are unhappy.

14. Some $$y^\prime$$ exist, i. e. Some people are unhealthy.

15. Some $$y^\prime$$ are $x$, and some are $x^\prime$. i. e. Some invalids are happy, and some are unhappy.

16. No $$y^\prime$$ exist. i. e. Nobody is unhealthy.



 

 

 

  

[See pp. 42–4]