Name Universals Homework Date

Name ________________________ Universals Homework Date ______________

Fx: x is fiendish Jx: x is a jumbuck m: Merlin

Gx: x is a gryphon Kx: x is kinky o: Ozymandias

Hx: x is horrible Lx: x is looney a: Ahuramazda

Ix: x is insane Mx: x is mad b: Bob

Based on the above scheme, draw a line from each sentence to its correct translation.

1. /\xJx a. A jumbuck exists

b. All things are jumbucks

2. $xKx a. A kinky thing exists

b. Everything is kinky

3. ~/\xLx a. No loonies exist

b. Not everything is a loony

4. ~$xMx a. No mad things exist

b. Not everything is mad.

5. /\x~Fx a. Everything is non-fiendish.

b. Not everything is fiendish.

6. $x~Gx a. Something exists that is not a gryphon.

b. No gryphons exist.

7. ~/\x~Hx a. It is not true that everything is non-horrible.

b. Everything is non-horrible.

8. ~$x~Ix a. Not even one non-insane thing exists.

b. A non-insane thing exists.

Circle the valid arguments, and cross out the invalid ones.

9. /\xFx Fm	10. $xGx Go	11. ~/\xHx ~Ha	12. ~$xIx ~Ib
13. Jm /\xJx	14. Ko $xKx	15. ~La ~/\xLx	16. ~Mb ~$xMx