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Q. A statement can be replaced only by a statement logically __________to it .

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

Q. In Symbolic logic parentheses, braces , brackets are used as __________ marks

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

Q. If A is true, X is false, then the truth value of the compound statement ~ ( A v X ) is -----

Q. The process of obtaining a proposition from a propositional function by substituting a constant for a variable is called …………………………………

Q. ---------- symbol stands for ‘either - or ’ relationship.

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

Q. The weak implication symbolized by Ɔ is called a

Q. Name the rule of inference ( P Ͻ q ) ≡ P v q )