Statements: All soaps are detergents. All detergents are powerders. Conclusion: I. All soaps are powerders. II. Some detergents are soaps. III. Some powerders are soaps. IV. Some powerders are detergents.
Answer & ExplanationOption: [D]
The area for soaps lies entirely within the area for powder. So, conclusion I follows. Detergents and soaps have a common area, powders and soaps have a common area and powders and detergents have a common area, So, conclusions II, III and IV also follow. Thus all the conclusions follow