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• Deductive Logic in general means to reach a certain logical conclusion from a general statement. The conclusion is usually derived from the stated premises. Solving such problem needs use of correct reasoning to determine a logical conclusion. The ability to logically examine the premises and determine the certain idea from a general statement helps build your reasoning abilities.
• The process of solving the problem involves taking various assumptions depending on the plot of the situation. You may even think of solving such a problem thinking backwards. Even the use of tables and Venn diagrams can be sort to solve the problem. While the main objective of this test is to strengthen your knowledge and reasoning skill by solving some logical problems.
• Make sure you have gone through the topic concepts before starting this test.

## Logical Consistency:Test-1

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 Question 1
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement. When I read a horror story, I have a nightmare. A. I read a story. B. I did not read a horror story C. I did not have a nightmare. D. I had a nightmare.
 A CB B AD C BC D AC
Question 1 Explanation:
I did not have a nightmare, so I must have read a horror story. When X, then Y. Y not, hence X not. Option 1 is the right choice.
 Question 2
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement. Either Sita is sick or she is careless. A. Sita is not sick. B. Sita is not careless. C. Sita is sick. D. Sita is careless.
 A AB B AD C BA D DA
Question 2 Explanation:
If Sita is not sick, it means she is careless. One of the either conditions has to be true. Hence, option 2 is the right choice.
 Question 3
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement. Ram gets a swollen nose whenever he eats hamburgers. A. Ram gets a swollen nose. B. Ram does not eat hamburgers C. Ram does not get a swollen nose. D. Ram eats hamburgers.
 A AB B DC C AC D CB
Question 3 Explanation:
Since, Ram does not eat Hamburgers; it means that he does not get a swollen nose. When X then Y and Hence Y not means X not. Hence, Option 4 is the right choice.
 Question 4
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement. Either the employees have no confidence in the management or they are hostile by nature. A. They are hostile by nature. B. They are not hostile by nature. C. They have confidence in the management. D. They have no confidence in the management.
 A BA B CB C DA D BD
Question 4 Explanation:
In the either-or case, we always select the first statement as the one that negates one of the two alternatives. This means that the other will happen with certainty.
 Question 5
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement.
Whenever Ram reads late into the night, his father beats him up. A. His father does not beat Ram. B. Ram reads late into the night. C. Ram reads early in the morning. D. Ramâ€™s father beats him in the morning.
 A CD B BD C AB D AC
Question 5 Explanation:
The correct answer in this case is option 4. Whenever (which means if) Ram reads late into the night, his father beats him up. So in case his father did not beat him up, then there is no way he read late into the night. This leads us to option D as the correct answer.
 Question 6
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement.
All irresponsible parents shout if their children do not cavort.
A. All irresponsible parents do not shout.
B. Children cavort.
C. Children do not cavort.
D. All irresponsible parents shout.
 A AB B BA C CA D All of the above
Question 6 Explanation:
If children do not cavort, all irresponsible parents shout. Now if irresponsible parents do not shout, this means in the first place the cause did not happen, that means children do covert. This makes option A the correct answer.
 Question 7
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement. Either the orangutan is not angry, or he frown upon the world . A. The orangutan frowns upon world. B. The orangutan is not angry. C. The orangutan does not frown upon the world. D. The orangutan is angry.
 A CB only B DA only C AB only D CB and DA
Question 7 Explanation:
The main statement states that if the Orangutan belongs to the set of not angry. Hence, he cannot belong to the set of frowns. Option CB states that Orangutan is not Frowns and is not angry.And Option DA states that Orangutan is not angry and is frowns. Hence, both of these follow logically. Option 4 is the right choice.
 Question 8
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement. Either Ravana is a demon, or he is a hero A. Ravana is a hero B. Ravana is a demon. C. Ravana is not a demon. D. Ravana is not a hero.
 A CD only B BA only C CD and BA D DB and CA
Question 8 Explanation:
The main statement clearly states that Ravana is either a Demon or a Hero. It follows that he has to be either of the two. DB states that Ravana is not a hero but a Demon. And CA states that Ravana is not a Demon but is a hero. Hence, both are logically valid.
 Question 9
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement. Whenever Rajeev uses the internet, he dreams about spiders. A. Rajeev did not dream about spiders. B. Rajeev used the Internet. C. Rajeev dream about spiders. D. Rajeev did not use the Internet.
 A AD B DC C CB D DA
Question 9 Explanation:
the statement can be clearly interpreted as when Rajeev uses the internet, he dreams about spiders. While it is possible for Rajeev to dream about spiders even when he is not using the internet. AD indicates that Rajeev did not dream about spiders and hence, he did not use the internet. Hence, option 1 is the right choice.
 Question 10
Directions for the question: In the following sentences the main statement is followed by four sentences each. Select a pair of sentences that relate logically with the given statement.
If I talk to my professors, then I do not need to take a pill for headache.
A. I talked to my professors.
B. I did not need to take a pill for headache.
C. I needed to take a pill for headache.
D. I did not talk to my professors.
 A AB only B DC only C CD only D AB and CD
Question 10 Explanation:
If I talked to my professors, in that case, I did not need to take the pill. And in case I did take the pill, then it that case I definitely did not meet my professors. When X, then Y. When Y not, then X not. Hence, both AB and CD are logically consistent. Hence, option 4 is the apt choice.
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