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Q. If A and B are true, X and Y are false , then the truth value of the compound Statement [ (A כ B) .( Y. X)]

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

Q. Statement forms that have both true and false statements among their substitution instances are called ……………………………………………..

Q. In case an argument is produced by substituting a different simple statement for each different statement variable in an argument form, that argument form is called ……………………

Q. ‘p and negation q’ is the symbolized as

Q. Which of the following is the obverse of the proposition of the A proposition’ All S is P ‘

Q. Name the rule of inference [ (P . Q ) Ͻ r ) ] ≡ [ p Ͻ ( q Ͻ r ) ]

Q. Premises and conclusion are…………………………….

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

Q. The truth value of the ____________ of two statements is completely determined by the truth value of its conjuncts.