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Q. _____________ is the process of obtaining a proposition from a propositional function by substituting a constant for the variable.

Q. “If it rains, then the road will be wet” is an example for……………………………………….

Q. The ____________of an argument is that proposition which is affirmed on the basis of other propositions of the argument.

Q. The relation between the general propositions (x) Mx and (∃x ) Mx is ……………

Q. Disjunction is a ------- proposition

Q. Which word is used to form the disjunction of two statements?

Q. A conditional statement asserts that in any case in which it’s antecedent is true, it’s consequent is ……………………………

Q. In Disjunction if p is true and q is true, p v q is -------

Q. By using ________, the logical form of an argument becomes explicit.

Q. ----- had introduced into logic the important notion of variable.