1. For the following indicating if the proposition is either a tautology, a contradiction, or a contingency ( ab)(ab)(ab)(ab)

Group of answer choices

Contingency

Tautology

Contradiction

2.

Using predicate symbols and appropriate quantifiers, write the symbolic form of the following English statement:

D(x) is x is a day; M is Monday; T is Tuesday. S(x) is x is sunny; R(x) is x is rainy.

-Every day that is rainy is not sunny

Group of answer choices

(x) [R(X) D(x) ~ S(x)]

(x) [~R(X) D(x) ~ S(x)]

(x) R(X) D(x) S(x)

(x) [R(X) D(x) S(x)]