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Q. When two statements are combined by using the phrase “if and only if”, the resulting compound statement is called …………………………………………..

Q. The rule of Hypothetical Syllogism ( H.S) is symbolized as

Q. Which of the following is the substitution instance of the statement form p. ~p

Q. If (∃ x ) Mx is true, then x) Mx is …………………

Q. In a conditional, the component statement that follows “ then ” is called ……………

Q. If (∃ x ) ( H x . Mx ) is false , then (x) ( H x Ͻ Mx ) is …………………

Q. Arguments, however are not properly characterized as being either true or false but valid and _________.

Q. …………………………………………………….. is the form of the argument

Q. In the history of logic, …………….………………….are two important stages of development.

Q. In Conjunction the word ------- is used to conjoin statements