Logical Reasoning
Logical Reasoning: Overview
This Topic covers sub-topics such as Statement and Arguments, Categorical Propositions, Statement- Courses of Action and, Statement Based Reasoning
Important Questions on Logical Reasoning
In the question below, a statement is given followed by two courses of action numbered I and II. A course of action is a step or administrative decision to be taken for improvement, follow-up or further action in regard to the problem, policy etc. On the basis of the information given in the statement, you have to assume everything in the statement to be true and then decide which of the suggested courses of action logically follow(s) for pursuing.
Statement: A number of school children in the local schools have fallen ill after the consumption of their subsidised tiffin provided by the school authority.
Courses of Action:
I. The tiffin facility of all schools should be discontinued with immediate effect.
II. The government should implement a system to certify the quality of tiffin provided by the school.

Mehta is the Director of investments for a mutual fund. He believes that blue-chip stocks and government securities will generally not do as well as corporate bonds in the coming year, but government regulations require that at least one-third of the fund's capital be in blue-chip stocks and another third in government securities.
Under current regulations, what seems to be the best way for Mehta to invest in the mutual fund?

An address has been given below, which has been reproduced against A, B, C and D alternatives. Three of these have some mistake or the other. Identify the one without any mistake.
FG EUROFRED LIMITED
Centennial Park,
Centennial Avenue,
Elstree, Hertfordshire
United Kingdom
WD6 3SG

In the question below is given a statement followed by two courses of action. The Course of action is a step for administrative decision to be taken for improvement, follow up or further action in regard to the problem, policy, etc. On the basis of the information given in the statement, you have to assume everything in the statement to be true, and decide which of the given suggested courses of action is/are logically worth pursuing.
Give your answer as:
(1) if only I follows
(2) if only II follows
(3) if either I or II follows
(4) if neither I nor II follows
(5) if both I and II follow
Statement:
Employment opportunities in the private sector industry declined from 4.50 million in December 1991 to 4.15 million in November 1992 due to a number of 'sick' industries. A report.
Courses of Action:
I. The Government should start new industries.
II. Unemployed should be given concessional loans.

Directions. Each of these questions consists of a statement followed by two arguments numbered I and II. You have to decide which of the arguments is a 'strong' arguments and which is a weak arguments.
Mark answer as
(1) if Only arguments I is strong.
(2) if only arguments II is strong.
(3) if either I or II is strong.
(4) if neither I nor II is strong.
Statement: Should military service be made compulsory in our country?
Arguments: I. No, It is against the policy of non-violence.
II. Yes, Every citizen should protect his country.

The question given below consists of a statement followed by two arguments numbered 1 and 2. You have to decide which argument(s) is/are implicit.
Statement: Should powerful nations attack relatively weaker nations that pose a probable danger to world peace?
Arguments:
Yes. War is justified for the noble purpose of peacekeeping.
No. War/violence should never be resorted to.

Direction: Assuming that the first proposition is false, how will you treat the following propositions?
Only atheists are Communists.
I. Whoever is not an atheist is other than a Communist.
II. Anyone who is not a Communist fails to be an atheist.

Directions: Each question below is followed by two arguments numbered I and II. You have to decide which of the argument is a 'strong' argument and which is a 'weak' argument.
Given below is a statement followed by two assumptions, find which of the two assumptions or both is (are) implicit.
Statement:
Seeing the poor performance of Indian Cricket team, I think it should be given some good coach.
Assumptions:
I. Better coach can enhance the performance.
II. Performance depends upon coach.

Following question has two conclusions following the two statements. Mark which are the valid conclusions.
Statements:
I. Some helicopters are metal
II. All aeroplanes are metal
Conclusions:
I. All helicopters are aeroplanes
II. Some metals are aeroplanes

The development of hypothesis is known as:

Which of the following is not to test a good theory?

Read the given statement and course of action carefully and select which of the course of action logically follow(s) from the statement.
Statement:
According to the IMD report, there can be heavy rain in TN due to a depression in the Bay of Bengal.
The course of action:
I. IMD should be rewarded for a timely warning.
II. The government should give clear warnings through the media that fishermen should not go into the sea for fishing.

Read the given statement followed by courses of action, and mark your answer.
Statement: There is a substantial reduction in the production of papers by almost all the paper mills in the company due to a shortfall of raw materials during the first half of the current financial year.
Courses of action:
I. The government should make efforts to import papers to meet the domestic demand.
II. The paper mills should be encouraged to import raw materials from neighbouring countries to augment the production level.

A statement is given followed by four alternative arguments. Select the alternative which is the most appropriate.
Statement
Is it necessary that education should be job-oriented?
Arguments:
I. Yes, the aim of education is to prepare persons for earning.
II. Yes, educated person should stand on his own feet after completion of education.
III. No, education should be for sake of knowledge only.
IV. No, one may take up agriculture where education is not necessary.

The question given below is followed by two arguments. You have to decide which argument is strong in context of the statement.
Question :
Should we encourage communal washing centres?
Argument :
I. Yes, it will save a lot of resources.
II. No, this concept is new in India because people still wash their clothes in home.

Read the following statement and the corresponding arguments and then mark the correct option.
Statement: Should there be only a uniform rate of income tax irrespective of the level of income?
Arguments:
I. Yes, this will substantially reduce the work of the officials of the income tax department.
II. No, this will reduce government tax collection to a large extent.

Read the following statement and the corresponding arguments. Then, mark the correct option.
Statement : Should English be the medium of instruction for higher education in India?
Arguments:
I. Yes, even in advanced countries like UK and USA, the medium of instruction is English for higher education.
II. Yes, English is much widely spoken language in the world today.

In question, one statement is given, followed by four arguments, I, II, III and IV. You have to consider the statement to be true, even if they seem to be at variance from commonly known facts. You are to decide which of the given arguments can definitely be drawn from the given statement(s). Indicate your answer.
Statement: Should little children be loaded with such heavy school bags?
Arguments:
I. Yes, heavy bag means more knowledge.
II. No, heavy school bags spoil the posture of the children.
III. Yes, children need to be adapted for earning knowledge.
IV. No, a heavy bag never ensures knowledge gathering.

In each of the question below are given four statements followed by four conclusions numbered I, II, III, IV. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregard commonly known facts.
Statements:
All plates are stand.
All plates are table.
All tables are books.
All books are copies.
Conclusions:
I. Some books are table.
II Some plate are copies.
III. Some tables are copies.
IV. All plates are books.

In each of the question below are given four statements followed by four conclusions numbered I, II, III, IV. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregard commonly known facts.
Statements:
Some dinning is bed.
Some beds are furniture.
Some furniture are desk.
All desks are cupboard.
Conclusions:
I. All bed are furniture.
II. Some dinning are cupboard.
III. All desks are dinning.
IV. Some cupboard are bed.
