Statement and Conclusions Questions

Q:

Statements :
All keys are locks.
All locks are bangles.
All bangles are cars.


Conclusion :
a. Some cars are locks.
b. Some bangles are keys.
c. Some cars are keys.

A) Only a follows B) Only c follows
C) Only a & b follows D) a, b & c follows
 
Answer & Explanation Answer: D) a, b & c follows

Explanation:

All locks are bangles + All bangles are cars = A + A = A
= All locks are cars => Some cars are locks.
Hence conclusion (a) follows.
All keys are locks + All locks are bangles = A + A = A
= All keys are bangles => some bangles are keys.
Hence conclusion (b) follows.
All keys are bangles + All bangles are cars = A + A = A
= All keys are cars => Some cars are keys.
Hence conclusion (C) follows.

 

 

 

Thus all a, b and c follows.

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Q:

What is the first term of an arithmetic progression of positive integers ?

(I) Sum of the squares of the first and the second term is 116.

(II)The fifth term is divisible by 7.

A) Only a is sufficient B) Only b is sufficient
C) Both a & b are necessary D) None
 
Answer & Explanation Answer: A) Only a is sufficient

Explanation:

The sum of square of two no is 116 i.e no lie 1-11, because 11x11 =121 which is greater than 116
again after cheaking all possible pair of no only 4 and 10 satisfy this condsn , again the progression is of positive integer so 10 cant not be 1st term
so the 1st term is 4,
but from the 2nd we cant able to find the 1st term

so only 1st statement is sufficient to answer the question

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Q:

What is the value of KL ?

Statement A: K2= 4.
Statement B: L = 0.

A) Only A is sufficient B) Only B is sufficient
C) Both (A) and (B) are sufficient D) None of the above
 
Answer & Explanation Answer: B) Only B is sufficient

Explanation:

From statement B, 

As the value of L = 0, the value of KL = 0.

Hence only statement B is sufficient.

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Q:

Statement :

The byproducts obtained from animals such as hairs, skins, horns, etc. contain at least 45 per cent food protein. Indian scientists have developed methods to segregate 50 per cent of this protein. They have used an enzyme developed in Russia for destruction of soya-proteins.

Conclusions:

A. Indian scientists cannot develop enzymes.

B. If a suitable method involving less cost is developed then many more food protein would be obtained.

A) Only A follows B) Only B follows
C) Neither A nor B follows D) Both A & B follows
 
Answer & Explanation Answer: C) Neither A nor B follows

Explanation:

There is no indication that Indian scientists are incapable of developing enzymes. There could be any number of reasons why Indian scientists used Russian enzymes.

So conclusion A does not follow.

In addition, cost is not discussed in the passage at all. There is no mention of a correlation between cost and extraction of proteins.

Thus, conclusion B does not follow either.

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Q:

Read the following question and decide which of the given statements is/are sufficient.

.
In a class of 50 students, how many girls scored above 80% in Maths?


Statements:


1. Exactly four boys scored above 80% in Maths.


2. One-third of the class scored above 80% in Maths

 

A) Either 1 or 2 is sufficient to answer the question. B) Both 1 or 2 together are sufficient to answer the question.
C) 1 alone is sufficient while 2 alone is not sufficient to answer the question. D) .2 alone is sufficient while 1 alone is not sufficient to answer the question.
 
Answer & Explanation Answer: A) Either 1 or 2 is sufficient to answer the question.

Explanation:
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Q:

Read the following statement and the arguments that follow. Decide which of the arguments is strong.


Statement:
Should written examination in primary schools be abolished?


Arguments:
1. Yes, young students feel the burden and such examinations do not help in the natural thinking process.
2. No, without examination students will not be serious about education and learning.

A) Both arguments I and 2 are strong B) Only argument I is strong
C) Neither argument 1 nor 2 is strong D) Only argument 2 is strong
 
Answer & Explanation Answer: A) Both arguments I and 2 are strong

Explanation:
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Q:

Statements : Government has spoiled many top ranking financial institutions by appointing bureaucrats as Directors of these institutions.

Conclusions :

a) Government should appoint Directors of the financial institutes taking into consideration the expertise of the person in the area of finance.
b) The Director of the financial institute should have expertise commensurate with the financial work carried out by the institute.

A) Only a follows B) Only b follows
C) Both a & b follows D) Neither a nor b follows
 
Answer & Explanation Answer: C) Both a & b follows

Explanation:

According to the statement, Government has spoiled financial institutions by appointing bureaucrats as Directors. This means that only those persons should be appointed as Directors who are experts in finance and are acquainted with the financial work of the institute. So, both a and b follows.

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Q:

Read the following statements and answer the question given below.

U.S. fraternity and sorority members who drink heavily while in school don’t tend to drink after graduation, according to a recent study in Psychology of Addictive Behaviours.

Which of the following would be a logical extension of the above passage?

A) Most men come out of a drinking binge after they cross thirty. B) With graduation comes a sense of responsibility which makes students abstain from such vices.
C) Drinking begins as a group activity and as students leave these groups, the habit of drinking is also left behind. D) Drinking heavily during college days make most students realize the harmful effects of alcoholic drinks.
 
Answer & Explanation Answer: C) Drinking begins as a group activity and as students leave these groups, the habit of drinking is also left behind.

Explanation:

The passage only provides the information that students drink in school but seem to stop binging after they graduate. Option [A] is incorrect as there is no mention in the passage that students
are only males and that they graduate at thirty. Options [B] and [D] are incorrect because it is not mentioned so in the passage. Since the passage talks about student groups - 'fraternity and sorority members' - a logical extension would be that it is these groups that prod students to begin drinking and with the breaking of these groups, the habit is also broken. Hence, [C].

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