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Logical Deduction Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Logical Deduction. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 1 - Statements: Some nurses are surgeons. Some surgeons are wealthy.
Conclusions:
I. Some nurses are wealthy.
II. Some wealthy are nurses.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : D
Explanation
Since both the statements are particular, no definite conclusion is valid.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 2 - Statements: Some devils are angels. All social workers are angels
Conclusions:
I. Some devils are social workers.
II. Some social workers are devils
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : D
Explanation
The first statement is an I type proposition. So, the intermediate term 'angels' forming the significance is not distributed. The second statement is an A type proposition. So, the intermediate term 'angels' forming the significance is not distributed. Since the intermediate term is not distributed even once in the statements, no definite conclusion is valid.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 3 - Statements: Some cold drinks are toxic. Some toxic are hazardous.
Conclusions:
I. All cold drinks are hazardous.
II. No cold drinks are hazardous.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : C
Explanation
We are not sure whether all cold drinks are hazardous is true or no cold drinks are hazardous is true but the chances of occurrence of both the options is equally likely hence, option C is correct.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 4 - Statements: All windows are panes. No pane is wall.
Conclusions:
I. No window is wall.
II. No wall is pane.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : E
Explanation
Since both the statements are broad and one statement is not positive, the conclusion must be broad but not positive. Also, the conclusion should not contain the intermediate term. So, I is valid. However, conclusion II is the opposite of the second statement and thus it also holds true.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 5 - Statements: All boys are honest. Dravid is honest.
Conclusions:
I. Dravid is a boy.
II. All honest persons are boys.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : D
Explanation
We can neither conclude that ‘Dravid is a boy’ nor ‘all honest persons are boys’. Hence, option D is correct.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 6 - Statements: All bandages are garlic. All garlic are cakes.
Conclusions:
I. All cakes are bandages.
II. Some cakes are bandages.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : B
Explanation
All cakes cannot be bandages if we look at the statements. But some cakes are definitely bandages. Hence, option B is correct.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 7 - Statements: Some kings are handsome. All handsome are greedy.
Conclusions:
I. All kings are greedy.
II. Some kings are greedy.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : B
Explanation
Only option II is correct. Some kings are greedy.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 8 - Statements: All giraffes are camels. Some camels are tigers. No tigers are lions.
Conclusions:
I. Some lions are camels.
II. There is possibility of some goats to be lions.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : B
Explanation
Yes, there are definitely possibilities of some goats to be lions. But some lions are camels are not true. Hence, option B is correct.
The following question, two or three statements are given and after that two conclusions are provided. You have to take the statements to be true though it shows difference from the known facts. At first, read the statements and then go to the conclusions. Among the conclusions, decide which is logically correct and answer the question by choosing the options provided.
Q 9 - Statements: All bags are tables. All lamps are tables.
Conclusions:
I. Some lamps are bags.
II. No lamp is bag.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : C
Explanation
Since the intermediate term 'tables' is not distributed even once in the statements, no definite conclusion is valid. However, I and II conclusions involve only the extreme terms and form a complementary pair. So, either I or II is valid.
The following question are given with some conclusions. Choose the options that logically follow the most.
Q 10 - Statements: Some canals are streams. Some streams are deserts. All deserts are roads.
Conclusions:
I. Some roads are streams.
II. Some roads are canals.
III. Some deserts are canals.
Options:
Answer : B
Explanation
Some canals are streams. Some streams are deserts. Since both the statements are particular, no definite conclusion is valid. Some streams are deserts. All deserts are roads. Conclusion II is particular because of sentence.
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