6Dec19 morning Q11

11Consider the following statements and choose the right option
A. Middle term should be distributed in atleast one premise
B. Middle term should be present in the conclusion
C. Both premises can be particular in a valid argument
D. Both premises can be negative in a valid argument

Option : C
Explanation :
'Middle term should be distributed in at least one premise' is the only correct statement among those given.
Categorical syllogisms have exactly three categorical propositions, two of which are premises; and the third is the conclusion. There are exactly three terms, each appearing only twice.
Four rules apply to all valid categorical syllogism:
Rule 1: The middle term must be distributed in at least one premise.
Rule 2: Any term that is distributed in the conclusion must be distributed in the premises.
Rule 3: The number of negative premises must be equal to the number of negative conclusions.
Rule 4: No particular conclusion can be drawn from exclusively universal premises. Arguments that pass each of these tests are valid. Those that fail to satisfy even one of the rules are invalid

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