Syllogism

J&K Bank Banking Associate · Reasoning Ability · 80 practice questions with answers and explanations: 43 Easy, 37 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Statements: 1. No boats are rivers 2. All boats are keys Conclusions: I. Some rivers are keys II. Some keys are not boats Assume every group named has at least one member, take the statements to be true even if they differ from common facts, and decide which conclusion(s) follow.

  1. Only conclusion I follows
  2. Only conclusion II follows
  3. Either conclusion I or II follows
  4. Neither conclusion I nor II follows
Show answer

Answer: D. Treating each group as non-empty and drawing every possible Venn arrangement that fits the statements: conclusion I fails in at least one, and conclusion II fails in at least one.

Sample Easy question 2

Statements: 1. Some doctors are cars 2. Some doctors are not houses Conclusions: I. All houses are cars II. Some cars are houses Assume every group named has at least one member, take the statements to be true even if they differ from common facts, and decide which conclusion(s) follow.

  1. Only conclusion I follows
  2. Only conclusion II follows
  3. Either conclusion I or II follows
  4. Neither conclusion I nor II follows
Show answer

Answer: D. Treating each group as non-empty and drawing every possible Venn arrangement that fits the statements: conclusion I fails in at least one, and conclusion II fails in at least one.

Sample Easy question 3

Statements: 1. All tables are birds 2. Some birds are keys Conclusions: I. No tables are keys II. Some tables are birds Assume every group named has at least one member, take the statements to be true even if they differ from common facts, and decide which conclusion(s) follow.

  1. Only conclusion I follows
  2. Only conclusion II follows
  3. Either conclusion I or II follows
  4. Neither conclusion I nor II follows
Show answer

Answer: B. Treating each group as non-empty and drawing every possible Venn arrangement that fits the statements: conclusion I fails in at least one, and conclusion II follows in all of them.

Sample Medium question 4

Statements: All pens are objects. All objects have mass. Conclusion: All pens have mass. Is this valid?

  1. Valid
  2. Invalid
  3. Cannot be determined
  4. None of these
Show answer

Answer: A. Since pens are objects and all objects have mass, all pens must have mass.

Sample Medium question 5

Statements: No mangoes are vegetables. Some fruits are mangoes. Conclusion: Some fruits are not vegetables. Is this valid?

  1. Valid
  2. Invalid
  3. Cannot be determined
  4. None of these
Show answer

Answer: A. The fruits that are mangoes cannot be vegetables, so some fruits are indeed not vegetables.

Sample Medium question 6

Statements: 1. All doctors are phones 2. No phones are fruits Conclusions: I. All fruits are doctors II. No phones are doctors Assume every group named has at least one member, take the statements to be true even if they differ from common facts, and decide which conclusion(s) follow.

  1. Only conclusion I follows
  2. Only conclusion II follows
  3. Either conclusion I or II follows
  4. Neither conclusion I nor II follows
Show answer

Answer: D. Treating each group as non-empty and drawing every possible Venn arrangement that fits the statements: conclusion I fails in at least one, and conclusion II fails in at least one.

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