1) choose the appropriate answer which not related with the symbol of ∀  a) for all b) for every c) true for all elements d) true for at least one elemnt 2) choose the appropriate answer which not related with the symbol of ∃ a) there exists b) there is at least one c) true for at least one element d) for all 3) choose the appropriate meaning for symbol of '' ⋁ '' a) and b) or c) either... or d) if and only if 4) choose the appropriate meaning for symbol of ''Ʌ'' a) or b) if .....then c) and d) either.... or 5) choose the appropriate meaning for symbol of ''⇒'' a) if and only if b) either... or c) if...then d) or 6) choose the appropriate meaning for symbol of ''⇔'' a) if......then b) either...or c) if and only if d) or 7) choose the appropriate meaning for symbol of ''⊻'' a) either ....or b) if....then c) or d) and

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