Logical Reasoning MCQ & Objective Questions
Logical reasoning is a crucial skill that plays a significant role in various exams. Mastering logical reasoning can enhance your problem-solving abilities and boost your confidence during tests. Practicing MCQs and objective questions in this area not only helps in understanding concepts but also prepares you to tackle important questions effectively, leading to better scores in your exams.
What You Will Practise Here
Analytical reasoning techniques
Logical sequences and patterns
Deductive and inductive reasoning
Critical thinking and argument analysis
Data interpretation and logical puzzles
Venn diagrams and their applications
Common logical fallacies and how to avoid them
Exam Relevance
Logical reasoning is a vital component in various examinations, including CBSE, State Boards, NEET, and JEE. In these exams, you can expect questions that assess your ability to analyze information, draw conclusions, and solve problems logically. Common question patterns include identifying logical relationships, solving puzzles, and interpreting data, making it essential to practice logical reasoning MCQ questions to excel.
Common Mistakes Students Make
Overlooking key details in the questions
Confusing similar logical patterns
Rushing through problems without careful analysis
Neglecting to practice with a variety of question types
FAQs
Question: What are some effective strategies for solving logical reasoning MCQs?Answer: Break down the question, identify keywords, and eliminate clearly wrong options to improve your chances of selecting the correct answer.
Question: How can I improve my logical reasoning skills?Answer: Regular practice with logical reasoning objective questions and reviewing explanations for both correct and incorrect answers can significantly enhance your skills.
Start your journey towards mastering logical reasoning today! Solve practice MCQs to test your understanding and boost your exam preparation. Remember, consistent practice is the key to success!
Q. Statement: All birds can fly. Assumption: Penguins are birds.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
The assumption is false because penguins are birds that cannot fly, contradicting the statement.
Correct Answer:
B
— False
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Q. Statement: All birds can fly. Assumption: Some flying creatures are not birds.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
The assumption contradicts the statement, as it implies that not all flying creatures are birds.
Correct Answer:
B
— False
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Q. Statement: All birds have feathers. Argument: Therefore, penguins are birds because they have feathers.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is valid.
D.
Argument is irrelevant.
Show solution
Solution
The argument is strong because it correctly identifies penguins as birds based on the given statement.
Correct Answer:
A
— Argument is strong.
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Q. Statement: All cars have wheels. Argument: Therefore, if it has wheels, it is a car.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is irrelevant.
D.
Argument is valid.
Show solution
Solution
The argument is weak because having wheels does not necessarily mean it is a car; other vehicles also have wheels.
Correct Answer:
B
— Argument is weak.
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Q. Statement: All cats are mammals. Argument: Therefore, all mammals are cats.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is irrelevant.
D.
Argument is valid.
Show solution
Solution
The argument is weak because it incorrectly assumes that all mammals are cats, which is not true.
Correct Answer:
B
— Argument is weak.
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Q. Statement: All cats are mammals. Argument: Therefore, some mammals are cats.
A.
The argument is valid.
B.
The argument is invalid.
C.
The argument is irrelevant.
D.
The argument is a tautology.
Show solution
Solution
The argument is valid because if all cats are mammals, it logically follows that some mammals are indeed cats.
Correct Answer:
A
— The argument is valid.
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Q. Statement: All cats are mammals. Assumption: Some mammals are cats.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
If all cats are mammals, it logically follows that some mammals must be cats.
Correct Answer:
A
— True
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Q. Statement: All dogs are animals. Argument: Therefore, all animals are dogs.
A.
The argument is valid.
B.
The argument is invalid.
C.
The argument is a syllogism.
D.
The argument is a paradox.
Show solution
Solution
The argument is invalid because the statement does not imply that all animals are dogs, only that all dogs are included in the category of animals.
Correct Answer:
B
— The argument is invalid.
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Q. Statement: All dogs are animals. Argument: Therefore, no animals are dogs.
A.
The argument is valid.
B.
The argument is invalid.
C.
The argument is a misinterpretation.
D.
The argument is a conclusion.
Show solution
Solution
The argument is invalid because stating that all dogs are animals does not imply that no animals are dogs.
Correct Answer:
B
— The argument is invalid.
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Q. Statement: All dogs are animals. Assumption: All animals are dogs.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
The statement does not imply that all animals are dogs; it only states that all dogs are included in the category of animals.
Correct Answer:
B
— False
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Q. Statement: All dogs bark. Assumption: Some animals that bark are dogs.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
If all dogs bark, then it is true that some animals that bark are indeed dogs.
Correct Answer:
A
— True
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Q. Statement: All dogs bark. Assumption: Some animals that bark are not dogs.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
The assumption is valid as it does not contradict the statement about dogs.
Correct Answer:
A
— True
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Q. Statement: All fruits are healthy. Assumption: Apples are fruits.
A.
Assumption is definitely true.
B.
Assumption is probably true.
C.
Assumption is definitely false.
D.
Assumption cannot be determined.
Show solution
Solution
Since apples are classified as fruits, the assumption is true.
Correct Answer:
A
— Assumption is definitely true.
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Q. Statement: All fruits are healthy. Assumption: Junk food is unhealthy.
A.
Assumption is definitely true.
B.
Assumption is probably true.
C.
Assumption is definitely false.
D.
Assumption is irrelevant.
Show solution
Solution
The assumption is definitely true as it supports the idea that fruits, being healthy, contrast with junk food.
Correct Answer:
A
— Assumption is definitely true.
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Q. Statement: All fruits are healthy. Assumption: Some unhealthy foods are not fruits.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
The assumption is true and does not contradict the statement about fruits being healthy.
Correct Answer:
A
— True
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Q. Statement: All fruits have seeds. Argument: Therefore, a seedless fruit is not a fruit.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is valid.
D.
Argument is sound.
Show solution
Solution
The argument is weak because it incorrectly defines fruits based solely on the presence of seeds.
Correct Answer:
B
— Argument is weak.
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Q. Statement: All fruits have seeds. Argument: Therefore, all things with seeds are fruits.
A.
The argument is valid.
B.
The argument is invalid.
C.
The statement is false.
D.
The statement is true.
Show solution
Solution
The argument is invalid because not all things with seeds are fruits.
Correct Answer:
B
— The argument is invalid.
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Q. Statement: All fruits have seeds. Argument: Therefore, strawberries are fruits because they have seeds.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is irrelevant.
D.
Argument is valid.
Show solution
Solution
The argument is strong because it correctly identifies strawberries as fruits based on the given statement.
Correct Answer:
A
— Argument is strong.
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Q. Statement: All humans are mortal. Argument: Therefore, Socrates is mortal because he is a human.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is irrelevant.
D.
Argument is valid.
Show solution
Solution
The argument is strong because it correctly applies the general statement about humans to a specific case (Socrates).
Correct Answer:
A
— Argument is strong.
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Q. Statement: All humans are mortal. Argument: Therefore, Socrates is mortal.
A.
The argument is valid.
B.
The argument is invalid.
C.
The argument is a syllogism.
D.
The argument is a tautology.
Show solution
Solution
The argument is valid because Socrates, being a human, must be mortal as per the statement.
Correct Answer:
A
— The argument is valid.
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Q. Statement: All mammals have lungs. Argument: Therefore, all animals with lungs are mammals.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is irrelevant.
D.
Argument is valid.
Show solution
Solution
The argument is weak because having lungs does not exclusively mean that an animal is a mammal.
Correct Answer:
B
— Argument is weak.
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Q. Statement: All mammals have lungs. Argument: Therefore, some animals with lungs are mammals.
A.
The argument is valid.
B.
The argument is invalid.
C.
The argument is a misinterpretation.
D.
The argument is a conclusion.
Show solution
Solution
The argument is valid because if all mammals have lungs, it follows that some animals with lungs must be mammals.
Correct Answer:
A
— The argument is valid.
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Q. Statement: All mammals have lungs. Argument: Therefore, whales have lungs.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is irrelevant.
D.
Argument is valid.
Show solution
Solution
The argument is strong because it correctly states that whales, being mammals, must have lungs.
Correct Answer:
A
— Argument is strong.
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Q. Statement: All squares are rectangles. Argument: Therefore, all rectangles are squares.
A.
The argument is valid.
B.
The argument is invalid.
C.
The argument is a generalization.
D.
The argument is a misinterpretation.
Show solution
Solution
The argument is invalid because while all squares are rectangles, not all rectangles are squares.
Correct Answer:
B
— The argument is invalid.
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Q. Statement: All squares are rectangles. Argument: Therefore, some rectangles are squares.
A.
Argument is strong.
B.
Argument is weak.
C.
Argument is irrelevant.
D.
Argument is valid.
Show solution
Solution
The argument is strong because it correctly states that squares are a specific type of rectangle.
Correct Answer:
A
— Argument is strong.
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Q. Statement: All squares are rectangles. Assumption: All rectangles are squares.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
The statement indicates that squares are a subset of rectangles, not that all rectangles are squares.
Correct Answer:
B
— False
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Q. Statement: All students must submit their assignments on time. Assumption: Some students will submit their assignments late.
A.
Assumption is valid.
B.
Assumption is invalid.
C.
Assumption is partially valid.
D.
Assumption cannot be determined.
Show solution
Solution
The assumption is valid as it is possible that some students may not adhere to the rule of submitting on time.
Correct Answer:
A
— Assumption is valid.
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Q. Statement: All students must submit their assignments on time. Assumption: Some students will submit late.
A.
Assumption is valid.
B.
Assumption is invalid.
C.
Assumption is partially valid.
D.
Assumption cannot be determined.
Show solution
Solution
The assumption is invalid because the statement implies that all students will submit on time, contradicting the assumption.
Correct Answer:
B
— Assumption is invalid.
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Q. Statement: All teachers are educated. Assumption: Some educated people are teachers.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
If all teachers are educated, it is reasonable to assume that some educated people are indeed teachers.
Correct Answer:
A
— True
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Q. Statement: Eating fruits daily improves health. Assumption: Fruits are healthy.
A.
True
B.
False
C.
Cannot be determined
D.
None of the above
Show solution
Solution
If eating fruits improves health, it implies that fruits must be healthy.
Correct Answer:
A
— True
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