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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: All oceans are waters. Some waters are boats.
Conclusions:
I. Some boats are oceans.
II. All waters are boats
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : D
Explanation
We cannot say that some boats are oceans and also all waters cannot be boats, hence, neither of the options is valid. 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 2 - Statements: All lovers are singers. All film directors are lovers
Conclusions:
I. All film directors are singers.
II. Some lovers are film directors.
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 affirmative, the conclusion must be broad affirmative and should not contain the intermediate term. So, conclusion I is valid. Conclusion II is the opposite of the second statement and so 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 3 - Statements: Businessman marries only intelligent girls. Tosa is very intelligent.
Conclusions:
I. Tosa will marry a bureaucrat.
II. Tosa will not marry a bureaucrat.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : C
Explanation
The data does not mention whether all intelligent girls are married to Businessman. So, either I or II may follow.
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: No mega is cap. All caps are cameras.
Conclusions:
I. No camera is mega.
II. Some cameras are mega.
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 which option is correct but one thing is sure that both the options can be true, 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 5 - Statements: Some desks are caps. No cap is black.
Conclusions:
I. Some caps are desks.
II. No desk is black.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : A
Explanation
Since one statement is particular and the other statement is not positive, the conclusion must be particular but not positive and should not contain the intermediate term. So, it is valid that 'Some desks are not black'. However, conclusion I is the opposite of the first statement and thus it 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 6 - Statements: Some boats are pilgrims. All pilgrims are pious.
Conclusions:
I. All pious are pilgrims.
II. Some boats are pious.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : B
Explanation
From the statement ‘all pilgrims are pious’ and ‘some boats are pilgrims’ we can get that ‘some boats are pious definitely’. So conclusion II is definitely true. But conclusion I is not true. Hence, option B.
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 boys are young. No young is black.
Conclusions:
I. Some boys are black.
II. Some young are black.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : D
Explanation
Neither conclusion I nor II is valid. 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 8 - Statements: Some boys are brave. All brave are celebrities.
Conclusions:
I. Some celebrities are boys.
II. All celebrities are boys.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : A
Explanation
Only option A is correct. Because some celebrities are boys is possible. But conclusion II is not possible.
The following question are given with some conclusions. Choose the options that logically follow the most.
Q 9 - Statements: All buses are trains. Some trains are cars.
Conclusions:
I. Some buses are cars.
II. Some cars are buses.
III. Some cars are trains.
IV. Some trains are buses.
Options:
Answer : E
Explanation
Since the intermediate term 'trains' is not distributed even once in the statements, no definite conclusion is valid. However, III is the opposite of the second statement while IV is the opposite of the first statement. So, both of them holds true.
The following question are given with some conclusions. Choose the options that logically follow the most.
Q 10 - Statements: Some clothes are cottons. Some cotton is bags.
Conclusions:
I. No cloth is a bag.
II. All cottons are bags.
III. Some bags are clothes.
IV. No cottons is a cloth.
Options:
Answer : D
Explanation
None of the above conclusions holds true. Hence option D is correct.