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Free Logical Deductions MCQs with Answers

240 Logical Deductions MCQs from Analytical and Logical Reasoning, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Logical deductions require conclusions to be drawn from stated facts, conditions and relationships without adding outside information. The work includes handling all, some and none statements, necessary and sufficient conditions, ordering restrictions, true or false conclusions, and the difference between what must be true and what could be true.

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240 questions · page 9 of 12

161. Statements: Some shirts are pants. All pants are cotton. Conclusions: I. Some shirts are cotton. II. All cottons are shirts. III. Some pants are shirts.

  • A. I and III
  • B. Only III
  • C. Only II
  • D. None

Explanation: To solve this, visualize the relationships using Venn diagrams. The statement 'Some shirts are pants' means there's an overlap between…

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Correct answer: I and III

162. Statements: No cat is a mouse. Some mice are animals. Conclusions: I. Some animals are cats. II. Some animals are mice. III. All animals are cats

  • A. Only II
  • B. I and II
  • C. Only III
  • D. None

Explanation: The correct answer is Only II. From the statement 'Some mice are animals,' it logically follows that 'Some animals are mice,' making…

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Correct answer: Only II

163. Statements: All actors are people. All people are humans. Conclusions: I. All actors are humans. II. All humans are actors.

  • A. Only I
  • B. Only II
  • C. Both
  • D. None

Explanation: The correct answer is Option A: Only I. This is because the logical deduction follows the transitive property: if all actors are people…

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Correct answer: Only I

164. Statements: Some juices are drinks. All drinks are beverages. Conclusions: I. All beverages are drinks. II. Some beverages are juices

  • A. Only I
  • B. Only II
  • C. Both
  • D. None

Explanation: The correct answer is 'Only II'. The statements given are: 'Some juices are drinks' and 'All drinks are beverages.' From these, we can…

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Correct answer: Only II

165. Statements: No flower is plastic. Some plastics are recyclable. Conclusions: I. Some recyclables are flowers. II. No recyclable is flower. III. Some plastics are not flowers

  • A. Only III
  • B. Only II
  • C. none
  • D. I and II

Explanation: To solve this logical deduction problem, we analyze each conclusion separately.

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Correct answer: Only III

166. Statements: All rainbows are colors. No color is dull. Conclusions: I. No rainbow is dull. II. Some dull things are colors.

  • A. Only I
  • B. Only II
  • C. Both
  • D. None

Explanation: The statements are: 'All rainbows are colors' and 'No color is dull.' From these, we can conclude that all rainbows, being colors, cannot…

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Correct answer: Only I

167. Statements: All ladders are steps. Some steps are stairs. Conclusions: I. Some ladders are stairs. II. Some steps are ladders.

  • A. Only II
  • B. Only I
  • C. None
  • D. Both

Explanation: From the statements: 'All ladders are steps' and 'Some steps are stairs', we can deduce that some steps are indeed ladders.

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Correct answer: Only II

168. Statements: Some cameras are phones. No phone is a computer. Conclusions: I. No camera is a computer. II. Some phones are cameras. III. All computers are phones.

  • A. Only II
  • B. Only III
  • C. None
  • D. I and II

Explanation: The correct answer is Option A: Only II.Here's why:Conclusion I: 'No camera is a computer' is not necessarily true because the statements…

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Correct answer: Only II

169. Statements: Some fruits are red. All apples are fruits. Conclusions: I. Some apples are red. II. All red are apples. III. Some fruits are apples

  • A. Only III
  • B. Only I
  • C. none
  • D. I and III

Explanation: To evaluate the conclusions, consider the given statements: 'Some fruits are red' and 'All apples are fruits.' Conclusion III, 'Some…

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Correct answer: Only III

170. Statements: All oceans are water. All lakes are water. Conclusions: I. All lakes are oceans. II. Some lakes are oceans. III. All oceans are lakes.

  • A. None follow
  • B. Only I
  • C. Only III
  • D. I and II

Explanation: The correct answer is None follow. The statements provided tell us that all oceans and lakes are part of the larger category of water, but…

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Correct answer: None follow

171. Statements: No bird is fish. All birds are animals. Conclusions: I. No animal is fish. II. Some animals are not fish. III. Some fish are birds.

  • A. Only II
  • B. Only I
  • C. I and II
  • D. None

Explanation: The correct answer is 'Only II'. Here is why: Conclusion I suggests that no animal is a fish, which does not logically follow since the…

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Correct answer: Only II

172. Statements: Some metals are hard. All hard things are useful. Conclusions: I. Some metals are useful. II. All metals are useful.

  • A. Only I
  • B. Only II
  • C. Both
  • D. None

Explanation: The correct answer is Option A: Only I. The first statement tells us that some metals are hard, and the second statement confirms that all…

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Correct answer: Only I

173. Statements: All pens are blue. No blue is black. Conclusions: I. No pen is black. II. Some pens are black. III. All blacks are pens.

  • A. Only I
  • B. Only II
  • C. II and III
  • D. None

Explanation: To solve this problem, we need to evaluate each conclusion based on the given statements:1.

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Correct answer: Only I

174. Statements: All men are mortal. No immortal is man. Conclusions: I. All mortals are men. II. No immortal is mortal. III. Some mortals are men

  • A. Only III
  • B. I and II
  • C. Only II and III
  • D. None

Explanation: The correct answer is C: Only II and III. Conclusion II is directly supported by the statement 'No immortal is man,' which implies 'No…

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Correct answer: Only II and III

175. Statements: No car is bike. Some bikes are fast. Conclusions: I. Some fast things are not cars. II. Some fast things are bikes.

  • A. Only II
  • B. Both
  • C. Only I
  • D. None

Explanation: The correct answer is 'Both.' Conclusion I is valid because if some bikes are fast and no car is a bike, then the fast bikes cannot be…

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Correct answer: Both

176. Statements: All clouds are grey. Some grey things are fog. Conclusions: I. Some fog is cloud. II. Some grey things are clouds

  • A. Only II
  • B. Only I
  • C. None
  • D. I and II

Explanation: The correct answer is Option A: Only II. The statement 'All clouds are grey' implies that any cloud is also grey.

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Correct answer: Only II

177. Statements: Some rings are gold. No gold is silver. Conclusions: I. Some rings are not silver. II. All rings are silver. III. Some silver are not gold.

  • A. Only I
  • B. I and III
  • C. Only II
  • D. None

Explanation: To solve this problem, consider the statements: 'Some rings are gold' and 'No gold is silver'.

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Correct answer: Only I

178. Statements: All wires are copper. Some copper is metal. Conclusions: I. Some wires are metal. II. All copper is wire

  • A. Only I
  • B. Only II
  • C. Both
  • D. None

Explanation: Based on the statements: 'All wires are copper' and 'Some copper is metal', we cannot definitively conclude that 'Some wires are metal'…

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Correct answer: None

179. Statements: All clouds are sky. Some sky is blue. Conclusions: I. All sky is cloud. II. Some clouds are blue.

  • A. None
  • B. Only II
  • C. Only I
  • D. Both

Explanation: The correct answer is Option A: None.To solve this, consider the following:The first statement, 'All clouds are sky', tells us that the…

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Correct answer: None

180. Statements: No plastic is biodegradable. Some bags are plastic. Conclusions: I. Some bags are not biodegradable. II. All plastics are bags.

  • A. Only I
  • B. Only II
  • C. Both I and II
  • D. Neither I nor II

Explanation: The correct choice is Only I. The statement 'No plastic is biodegradable' universally applies to all plastics.

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Correct answer: Only I
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