WorksheetsIntro to Logic Chapter 9 Pre Worksheet
Total questions: 8
Worksheet time: 4mins
Which of the following is logically equivalent to ~(x)(Fx •~Dx)
~(Ǝx)(Sx ⊃Px)
(Ǝx)(Sx• Px)
(x)(Fx •Dx)
(Ǝx)(Sx ⊃ Px)
Symbolize the following:
Only rats are ugly
(x)(Rx ⊃ Ux)
(x)(Ux •Rx)
(x)(Rx • Ux)
(x)(Ux ⊃ Rx)
Symbolize the following:
No dog is not pretty
~(Ǝx)(Dx • ~Px)
~(x)(Dx ⊃ ~Px)
(Ǝx)(Dx • ~Px)
(x)(Dx ⊃ ~Px)
When a sentence begins with "Only" what follows is the antecedent?
True
False
Symbolize the following:
All crickets and beetles are insects
(x) ((Cx • Bx) ⊃Ix)
(x) ((Cx ⊃ Bx) ∨ Ix)
(x) ((Cx ⊃ Bx) •Ix)
(x) ((Cx ∨ Bx) ⊃Ix)
Symbolize the following:
All guys are tall.
(Ǝx) (Gx ⊃ Tx)
(x) (Gx • Tx)
(Ǝx) (Gx • Tx)
(x) (Gx ⊃ Tx)
Which id the following is logically equivalent to:
~(x)(Sx⊃ Px)
(x)(Sx⊃ Px)
(Ǝx)(Sx • ~Px)
(Ǝx)(Sx • Px)
~(Ǝx)(Sx • Px)
Symbolize the following using the following dictionary:
Bx = x is beautiful, Px= x is a person, Sx= x is smart, Fx= x is funny
Everyone beautiful is smart and funny.
(Ǝx)((Sx • Fx) ⊃ (Px • Bx))
(Ǝx) (Px • Bx) • (Sx • Fx))
(x)((Sx • Fx) ⊃ (Px • Bx))
(x)((Px • Bx) ⊃ (Sx • Fx))
