Logical Deduction Online Quiz

Answer : D

Explanation

Since both the statements are broad and one statement is not positive, the conclusion must be broad but not positive. So, neither I nor 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 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:

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 mega is cap. All caps are cameras.

Conclusions:

I. No camera is mega.

II. Some cameras are mega.

Options:

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 snakes are trees. All trees are cats.

Conclusions:

I. All snakes are cats.

II. All cats are snakes.

Options:

Answer : A

Explanation

Since both the statements are broad and affirmative, the conclusion must be broad and affirmative. II conclusion being affirmative, distributes the term 'cats'.

Since the term 'cats' is distributed in II without being distributed in any of the statements, so conclusion II cannot follow. Thus, 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 6 - Statements: Some boats are pilgrims. All pilgrims are pious.

Conclusions:

I. All pious are pilgrims.

II. Some boats are pious.

Options:

Answer : B

Explanation

From the statement ‘all pilgrims are pious’ and ‘some boats are pilgrims’ we can get that ‘some boats are pious definitely’. So conclusion II is definitely true. But conclusion I is not true. Hence, option B.

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 bakes are cakes. All lamps are cakes.

Conclusions:

I. Some lamps are bakes.

II. No lamp is bakes.

Options:

Answer : C

Explanation

Either I or II is correct. Hence, option C 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: 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:

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: All greens are ripe. All ripe are mango.

Conclusions:

I. All greens are definitely mango.

II. There is a possibility that all mangoes are green.

Options: