Logical Deduction Online Quiz

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: Some sticks are drums. Some drums are heavy.

Conclusions:

I. All heavy are either drums or sticks.

II. Some heavy are drums.

Options:

Answer : B

Explanation

Option I is not correct because both the statements are particular, so no definite conclusion can be ascertained but II conclusion 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 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 windows are panes. No pane is wall.

Conclusions:

I. No window is wall.

II. No wall is pane.

Options:

Answer : E

Explanation

Since both the statements are broad and one statement is not positive, the conclusion must be broad but not positive. Also, the conclusion should not contain the intermediate term. So, I is valid. However, 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 5 - Statements: Some hens are crows. All crows are horses.

Conclusions:

I. Some horses are hens.

II. Some hens are horses.

Options:

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: Some brinjals are bananas. All bananas are pumpkins.

Conclusions:

I. Some brinjals are pumpkins.

II. All pumpkins are brinjals.

Options:

Answer : A

Explanation

Some brinjals are definitely pumpkins because some brinjals are bananas and all bananas are pumpkins. But conclusion II is not on the cards. 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 7 - Statements: All dolls are mirrors. All bottles are mirrors. All bikes are bottles.

Conclusions:

I. All bikes are mirrors.

II. Some mirrors are bikes.

Options:

Answer : E

Explanation

Both conclusion I and II are true. Hence, option E is chosen.

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 mountains are hillocks. Some mountains are rivers. Some mountains are streams.

Conclusions:

I. Some streams are rivers.

II. No streams are rivers.

Options:

Answer : C

Explanation

Both the conclusions can take place but we are not sure which one will be correct. This is because, each have equal chances of occurrence. 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 9 - Statements: All shoes are black. No black things are cheap.

Conclusions:

I. All shoes are cheap.

II. Black shoes are not cheap.

Options: