Question : Directions: Three statements are given, followed by four conclusions numbered I, II, III, and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follows from the statements. Statements: All birds are ducks. Some ducks are crows. All crows are parrots. Conclusions: I. Some parrots are birds. II. Some parrots are ducks. III. Some crows are birds. IV. All parrots are birds.
Option 1: Only conclusions I and IV follow
Option 2: Only conclusion II follows
Option 3: Only conclusions I, II and IV follow
Option 4: Only conclusions II and III follow
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Correct Answer: Only conclusion II follows
Solution : According to the statements, the following Venn diagram can be drawn –
Let's analyse the conclusions – Conclusion I: Some parrots are birds – From the above diagram, it is evident that there is no direct relation between parrots and birds. So, no definite relation can be drawn from it. Therefore, this conclusion does not follow. Conclusion II: Some parrots are ducks – From the above diagram, it is evident that the circles representing parrots and ducks overlap each other and have a part of their area in common. So, from this, it can be concluded that some parrots are ducks. Thus, this conclusion follows. Conclusion III: Some crows are birds – From the above diagram, it is evident that there is no direct relation between crows and birds. So, no definite relation can be drawn from it. Therefore, this conclusion does not follow. Conclusion IV: All parrots are birds – From the above diagram, it is evident that there is no direct relation between parrots and birds. So, no definite relation can be drawn from it. Therefore, this conclusion does not follow.
So, only conclusion II follows according to the statements. Hence, the second option is correct.
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Question : Directions: Three statements are given, followed by four conclusions numbered I, II, III, and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: Some trees are leaves. Some leaves are flowers. Some flowers are branches. Conclusions: I. Some trees are flowers. II. Some leaves are branches. III. Some branches are flowers. IV. Some branches are leaves.
Option 1: Only conclusions II and III follow
Option 2: Only conclusions I and II follow
Option 3: Only conclusion III follows
Option 4: None of the conclusions follow
Question : Directions: In this question, three statements are given, followed by three conclusions numbered I, II, and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follows/follow from the statements. Statements: Some spoons are black. All black are crows. No crow is a plate. Conclusions: I. Some black are spoons. II. All crows are black. III. No plate is a crow.
Option 1: Only conclusion I follows
Option 2: Only conclusions I and III follow
Option 3: None of the conclusions follows
Option 4: Only conclusion II follows
Question : Directions: Three statements are given, followed by four conclusions numbered I, II, III, and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: I. Some coolers are mixers. II. Some mixers are scissors. III. Some scissors are knives. Conclusions: I. Some knives are mixers. II. Some scissors are coolers. III. Some knives are coolers. IV. No knife is a mixer.
Option 1: Only conclusions III and IV follow
Option 3: None of the conclusions follow
Option 4: Only conclusions II and IV follow
Question : Directions: Three statements are given, followed by four conclusions numbered I, II, III, and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: Some desks are trays. Some trays are plates. Some plates are desks. Conclusions: I. All desks are plates. II. All plates are desks. III. Some plates are trays. IV. All trays are desks.
Option 1: Only conclusion III follows
Option 2: Only conclusion IV follows
Option 3: Only conclusion II follows
Option 4: Only conclusion I follows
Question : Directions: Three statements are given, followed by three conclusions numbered I, II, and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow from the statements. Statements: I. All blocks are toys. II. All toys are books. III. All books are stories. Conclusions: I. Some toys are blocks. II. Some blocks are books. III. Some stories are toys.
Option 1: Only conclusions I and III follow
Option 2: Only conclusions II and III follow
Option 3: Only conclusions I and II follow
Option 4: All the conclusions follow
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