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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 hard workers win. All hard workers eat well.
Conclusions:
I. All those who eat well are hard workers.
II. All those who win eat well.
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 get to any conclusion. All those who eat well are hard workers and all those who win eat well cannot be 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 3 - Statements: Some papers are pens. Ink is a paper.
Conclusions:
I. Ink is not a pen.
II. Ink is a pen.
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 'papers' 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. Thus, 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 4 - Statements: Most teachers are boys. Some boys are principals.
Conclusions:
I. Some principals are boys.
II. Some teachers are principals.
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 particular, no definite conclusion is valid. However, conclusion I is the opposite of the second 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 5 - Statements: Some hens are crows. All crows are horses.
Conclusions:
I. Some horses are hens.
II. Some hens are horses.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : E
Explanation
Since one statement is particular, conclusion must not contain any middle term. So, II is valid. Conclusion I is the opposite of conclusion II 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 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 monkeys are fools. Some fools are rich.
Conclusions:
I. Some monkeys are rich.
II. Some rich are monkeys.
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 8 - Statements: All lizards are mangoes. Some mangoes are streets. All streets are mountains.
Conclusions:
I. Some mountains are mangoes.
II. Some mountains are lizards.
Options:
A - Only conclusion I is correct.
B - Only conclusion II is correct.
C - Either I or II is correct.
Answer : A
Explanation
Some mountains are mangoes is the only possible answer. But some mountains are lizards is not correct. Hence, option A is correct.
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 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.