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Q. The foundations of logic were laid by ------ in the fourth century B.C.

Q. A statement or statement form of the pattern p ≡ q is called ----

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

Q. The negation of ( ∃x) M x is logically equivalent to ……………………….

Q. ‘ No fruits are ripe ‘ is symbolized as

Q. The statement form with both true and false substitution instances is called _________.

Q. Ramesh and Dinesh will both not be elected.

Q. ‘Ram and Dinesh will not both be elected’ is symbolized as

Q. Name the rule of inference [ p . q v r ) ] ≡ [ p . q ) v p. r) ]

Q. The statement form p ↄ q is logically equivalent to