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Two statements are given, followed by four conclusions numbered I, II, III and IV. You have to take the two given statements to be true even if they seem to be at variance from the commonly known…

Question and options

Two statements are given, followed by four conclusions numbered I, II, III and IV. You have to take the two given statements to be true even if they seem to be at variance from the commonly known facts. Study all the conclusions and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.
Statements: Some trees are flowers
Some plants are flowers
Conclusions I. Some flowers are trees as well as plants
II. All flowers are trees
III. All flowers are plants
IV. No flower is tree as well as plant
  1. Only I and II follow
  2. Either I or IV follows
  3. All follow
  4. Either II or III follows

Answer and explanation

Correct answer: B - Either I or IV follows
With two 'some' premises nothing definite follows about flowers that are both trees and plants. Conclusions I ('some flowers are trees as well as plants') and IV ('no flower is tree as well as plant') form a complementary pair, so either I or IV follows. II and III do not follow.

Practice for these exams

  • CUSAT CAT LLM

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