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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 kangaroos are chimpanzees. No chimpanzee is Dinosaur.
Conclusions:
I. All kangaroos are chimpanzees.
II. Some dinosaurs are kangaroos.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : D
Explanation
None of the conclusions is true. 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 bags are chocos. All lamps are chocos.
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 'chocos' is not distributed even once in the statements, no definite conclusion is valid. However, I and II involve only the extreme terms and form a complementary pair. So, either I or 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 3 - Statements: All educated people read newspapers. Stan does not read newspaper.
Conclusions:
I. Stan is not educated.
II. Reading newspaper is not essential to be educated.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : A
Explanation
Since both the statements are broad and one statement is not positive, the conclusion must be broad but not positive and should not contain the intermediate term. So, only conclusion I 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 4 - Statements: No women are donkey. Madhuri is a women.
Conclusions:
I. Madhuri is not a donkey.
II. All women are not Madhuri
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 not positive, the conclusion must not be positive. Conclusion II cannot follow as it contains the intermediate term. So, only I 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 5 - Statements: All cars are cows. All fans are cows.
Conclusions:
I. All cars are fans.
II. Some fans are cars.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : D
Explanation
Since the intermediate term 'cars' 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 6 - Statements: All grasses are trees. No tree is shrub
Conclusions:
I. No grasses are shrubs.
II. Some shrubs are grasses.
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 not positive, the conclusion must not be positive. So, conclusion II cannot 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 7 - Statements: Some sands are pebbles. Some pebbles are rocks.
Conclusions:
I. Some rocks are sand.
II. Some pebbles are sand.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : B
Explanation
Conclusion II is valid. 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 8 - Statements: Some blankets are covers. All covers are papers. All papers are bags.
Conclusions:
I. Some bags are blankets.
II. Some papers are blankets.
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 are correct in this regard. Hence, option E 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: Some bullets are guns. Some guns are beads. All beads are rings.
Conclusions:
I. Some rings are guns.
II. Some guns are bullets.
III. Some rings are bullets.
Options:
Answer : C
Explanation
II is the opposite of first statement and so I holds true.
Some bullets are guns. Some guns are beads.
Since both the statements are particular, no definite conclusion can be drawn. Some guns are beads. All beads are rings. Since one statement is particular; conclusion must not contain any middle term. So, it is valid that 'Some guns are rings'. I is the opposite of this conclusion and so it holds true. Some bullets are guns. Some guns are rings. Since both the statements are particular, no definite conclusion can be drawn.
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