Question 1

If x)  Mx is true, then (? x )  Mx is …………………

Accepted Answer

A)  valid
B)  true
C)  true or false
D)  falseE) B) and C)
F) None of the above

Question 2

If (x)  ( H x ? Mx )  is false , then (? x )  x . Mx )  is …………………………

Accepted Answer

A)  valid
B)  true
C)  true or false
D)  falseE) A) and B)
F) A) and C)

Question 3

If x)  Mx is true, then (? x)  Mx is …………………

Accepted Answer

A)  true or false
B)  false
C)  true
D)  validE) A) and C)
F) A) and B)

Question 4

If (x)  ( H x ? Mx )  is true, then (? x )  x . Mx )  is …………………

Accepted Answer

A)  true
B)  true or false
C)  false
D)  validE) None of the above
F) A) and C)

Question 5

If (? x )  ( H x . Mx )  is false , then (x)  ( H x ? Mx )  is …………………

Accepted Answer

A)  valid
B)  true
C)  true or false
D)  falseE) All of the above
F) A) and B)

Exam 13: Logic and Quantifiers

If (? x ) ( H x . Mx ) is false , then (x) ( H x ? Mx ) is …………………