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Question 18 : Consider this propositions: "All birds have beaks. Some cat are birds. So some cats have beaks". Is this argument valid? no, it is not valid yes, it is valid only the second premise is not valid the second and thrid proposition are not valid Question 19 : Which of these options is not correct? any valid argument with at least one false premise is an unsound argument all invalid arguments are unsound if the premises are false, then the argument is not valid any valid argument with all premises true is a sound argument
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