Two- and three-statement deductions using all/some/no/only quantifiers; reverse syllogism.
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Q1 · Syllogism · EASY
Statements: All books are pens. Some pens are pencils. Conclusions: I. Some books are pencils. II. Some pencils are books. III. Some pencils are pens. Which conclusion(s) logically follow(s) from the given statements?
Q2 · Syllogism · MEDIUM
Statements: All dogs are animals. No animal is a plant. All roses are plants. Conclusions: I. No dog is a plant. II. No rose is an animal. III. Some roses are animals. Which conclusion(s) logically follow(s) from the given statements?
Q3 · Syllogism · MEDIUM
Statements: Some doctors are engineers. All engineers are scientists. No scientist is a teacher. Conclusions: I. Some doctors are scientists. II. Some doctors are not teachers. III. No engineer is a teacher. Which conclusion(s) logically follow(s) from the given statements?
Q4 · Syllogism · MEDIUM
Statements: Only a few mobiles are laptops. All laptops are tablets. No tablet is a charger. Conclusions: I. Some mobiles are tablets. II. Some mobiles are not tablets. III. No laptop is a charger. Which conclusion(s) logically follow(s) from the given statements?
Q5 · Syllogism · HARD
Statements: All windows are doors. Only doors are walls. Some walls are roofs. Conclusions: I. Some roofs are doors. II. All windows are walls. III. Some doors are roofs. IV. No roof is a door. Which conclusion(s) logically follow(s) from the given statements?