Logical Deduction Online Quiz

Answer : E

Explanation

'Every' is equivalent to 'All'. Since both the statements are broad and affirmative, the conclusion must be broad and affirmative and should not contain the intermediate term. So, conclusion I is valid. 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 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:

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: All birds are thin. Some thin are hens.

Conclusions:

I. Some birds are hens.

II. Some hens are thin.

Options:

Answer : B

Explanation

Since the intermediate term 'thin ' is not distributed even once in the statements, no definite conclusion is valid. However, II conclusion is the opposite of the second statement and so 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 4 - Statements: All trucks are handles. All cups are handles.

Conclusions:

I. All cups are trucks.

II. Some handles are not cups.

Options:

Answer : D

Explanation

Both the statements are A type propositions. So, in either, the intermediate term 'handles' 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 5 - Statements: All scientists are fair. All fair persons are strong.

Conclusions:

I. All scientists are strong.

II. Some strong peoples are fair.

Options:

Answer : E

Explanation

As all scientists are fair and all fair persons are strong, all scientists are fair and strong indeed. So statement I holds true. Similarly as all fair persons are strong that means some strong persons are fair. Hence conclusion II 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: No women scientist can play. Some women scientists are athletes.

Conclusions:

I. Male athletes can play.

II. Some athletes can play.

Options:

Answer : D

Explanation

Since one statement is not positive, the conclusion must not be positive. So, none of the 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 7 - Statements: Some bananas are trees. All trees are pens. All pens are boats.

Conclusions:

I. Some boats are bananas.

II. Some pens are bananas.

Options:

Answer : E

Explanation

Both conclusion I and II follow. 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 8 - Statements: All tigers are cats. No bird is cat. Some camels are birds.

Conclusions:

I. Some birds are tigers.

II. There is possibility that some cats are camels.

Options:

Answer : B

Explanation

Some birds are tigers is not true. But surely there is possibility that some cats are camels. 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: Some birds are pigeons. Some mosquitoes are pigeons. All pigeons are beautiful.

Conclusions:

I. Some birds are beautiful.

II. Some mosquitoes are beautiful.

Options: