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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: Color of all oranges are golden. Those are golden in colors are not cheap.
Conclusions:
I. All oranges are cheap.
II. Golden-colored oranges are not cheap.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : B
Explanation
Clearly, the conclusion must be broad but not positive and should not contain the intermediate term. So, it is valid that 'No orange is cheap'. Since all oranges are golden in color. Thus, II 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: All fishes are thick in size. Some fishes are heavy.
Conclusions:
I. All sharks are thick in size.
II. All dolphins are not thick in size
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, the conclusion must be also same and should be free from any intermediate term. So, it is valid that 'Some sharks are thick in size'. I is a cumulative result of this conclusion and the first statement. Thus, only I 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: Some papers are pens. Some pencils are pens.
Conclusions:
I. Some pens are pencils.
II. Some pens are papers.
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 statements are particular, no definite conclusion is valid. However, conclusion I is the opposite of second statement, while conclusion II is the opposite of the first statement. So, both of them hold 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 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: All mobiles are roads. All roads are calls.
Conclusions:
I. All calls are mobiles.
II. Some calls are mobiles.
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 roads are calls and all mobiles are roads, we can deduce that some calls are mobiles but all calls are mobiles is certainly not on the cards. 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 6 - Statements: All fans are chairs. No tables are fans.
Conclusions:
I. No tables are chairs.
II. Some tables are chairs.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : C
Explanation
From the given statements, we can conclude that no tables are chairs and some tables are chairs. Chances of occurrence 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 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: All bacteria are amoeba. No fish is amoeba. Some amoebas are fungi.
Conclusions:
I. There is possibility that some fishes are amoeba.
II. Some bacteria are fish.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : A
Explanation
Option A is correct because surely there is possibility that some fishes are amoeba. But some bacteria are fish is not possible. Hence, option A 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: Some birds are pigeons. Some mosquitoes are pigeons. All pigeons are beautiful.
Conclusions:
I. Some birds are beautiful.
II. Some mosquitoes are beautiful.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : E
Explanation
Both the conclusions follow in this question. Some birds are beautiful and also some mosquitoes are beautiful. This happens because in the statement it is given that all pigeons are beautiful. Hence, option E is correct.
The following question are given with some conclusions. Choose the options that logically follow the most.
Q 10 - Statements: All ships are buses. No hotel is bus. All bikes are hotels.
Conclusions:
I. No bike is ship.
II. No bus is bike.
III. No ship is hotel.
Options:
Answer : D
Explanation
All ships are buses. No hotel is bus.
Since both the statements are broad and one statement is not positive, the conclusion must be broad but not positive (E-type) and should not contain the intermediate term. So, it is valid that 'No train is hotel'. Thus, III is valid. All bikes are hotels. No hotel is bus. As discussed above, it is valid that 'No bike is bus'. II is the opposite of this conclusion and so it holds true. All trains are buses. No bike is bus. Again, it is valid that 'No train is bike'. I is the opposite of this conclusion and so it holds true.