Practice Reasoning Questions (Syllogism) With Explanations Set-21

Practice Reasoning Questions with answer
Practice Reasoning Questions (Syllogism) With Explanations Set-21:
Important Practice Reasoning Questions with explanation for SSC CHSL Exam was given here with solutions, candidates those who are preparing for those exams can use this material.

Directions (Question. 01-05): In each question below are given three statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements, disregarding commonly known facts.

1). Statements: Some biscuits are chocolates.
                          No chocolate is a pastry.
                          All pastries are cakes.
       Conclusions: I. No biscuit is a pastry.
                             II. Some cakes are biscuits.
                             III. No pastry is a chocolate.
a)    Only I follows
b)    Both I and II follow
c)    Only III follows
d)    All follow
e)    None of these


2). Statements: Some cars are jeeps.
                          Some jeeps are scooters.
                          All scooters are motorcycles.
       Conclusions: I. Some jeeps are motorcycles.
                            II. All motorcycles being cars is a possibility.
                            III. All cars being scooters is a possibility.
a)    Only II follows
b)    Both I and III follow
c)    Only II and III follow
d)    All follow
e)    None follows


3). Statements: Some books are papers.
                          All papers are pencils.
                          Some pencils are copies.
Conclusions: I. Some books are copies
                      II. Some books are pencils
                      III. Some papers are copies
a)    Only II follow
b)    Both I and III follow
c)    Only II and III follow
d)    All I, II, III follow
e)    None of these


4). Statements: No cat is a dog.
                          Some dogs are camels.
                          No camel is a rat.
Conclusions: I. Some camels are not cats.
                      II. Some cats are not rats.
                      III. Some rats are not dogs.
a)    Only I and II follow
b)    Only I and III follow
c)    Only II and III follow
d)    Only II follows
e)    None of these


5). Statements: All digits are numbers.
                          Some numbers are alphabets.
                          All alphabets are vowels.
    Conclusions: I. All digit being vowels is a possibility.
                           II. Some numbers are vowels.
                           III. Some numbers are digits.
a)    All follow
b)    Only II and III follow
c)    Only I and III follow
d)    None follows
e)    None of these

     
      Directions: (Questions 06-10): In each question below are given two or more statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with commonly known fact. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements, disregarding commonly known facts.
Give answer

a)    If only conclusion I follows.
b)    If only conclusion II follows.
c)    If either conclusion I or II follows.
d)    If neither conclusion I nor II follows.
e)    If both conclusions I and II follow.   

Questions (06-07):
Statements: All teachers are engineers.
                     All engineers are cooks.
                     Some cooks are merchants.

6). Conclusions: I. All engineers being merchants is a possibility.
                           II. Some merchants are cooks.


7). Conclusions: I. No merchant is an engineer.
                           II. No cook is an engineer.


Questions (08-09):
Statements: Some doctors are lawyers.
                      No lawyer is a man.
                      No man is honest.

8). Conclusions: I. All doctors can never be men.
                           II. Some honest are lawyers.


9). Conclusions: I. No lawyer is honest.
                          II. No doctor is a man.


10). Statements: Some letters are pages.
                            All pages are books.
       Conclusions: I. At least some letters are books.
                            II. At least some books are pages.


Answers:                                 
1). c)   2). d)   3). a)   4). e)   5). a)   6). e)   7). d)   8). a)   9). d)   10). e)

Check below the detailed explanation for the above Reasoning Questions:

1). Some biscuits are chocolates (I) + No chocolate is a pastry (E) = I + E = O = Some biscuits are not pastries. Hence conclusion I does not follow.
Again, Some biscuits are not pastries (O) + All pastries are cakes (A) = O + A = No conclusion. Hence conclusion II does not follow.
Again, No chocolate is a pastry (E) à conversion à No pastry is a chocolate (E). Hence conclusion III follows.
Answer is: c

2). Some jeeps are scooters (I) + All scooters are motorcycles (A) = I + A = I = Some jeeps are motorcycles. Hence conclusion I follows.
There are not negative statements. Hence the possibilities in II and III exist. Hence conclusion II and III also follow.
Answer is: d  

3). Some books are papers (I) + All papers are pencils (A) = I + A = I = Some books are pencils. Hence conclusion II follows.
Now, Some books are pencils (I) + Some pencils are copies (I) = I + I = I = No conclusion. Hence conclusion I does not follow.
Again, All papers are pencils (A) + Some pencils are copies (I) = A + I = No conclusion. Hence conclusion III does not follow.
Answer is: a

4). No cat is a dog (E) + Some dogs are camels (I) = E + I = O* = Some camels are not cats. Hence conclusion I follows.
Nor does conclusion II follow.
Again, Some dogs are camels (I) + No camel is a rat (E) = I + E = O =Some dogs are not rats. Hence conclusion III does not follow.
Answer is: e

5). There is no negative statement. Thus the possibility in I exists. Hence conclusion I follows.
Again, Some numbers are alphabets (I) + All alphabets are vowels (A) = I + A = I = Some numbers are vowels. Hence conclusion II follows.
Again, All digits are numbers (A) à conversion à Some numbers are digits (I). Hence, conclusion III follows.
Answer is: a 

6). All engineers are cooks (A) + Some cooks are merchants (I) = A + I = No conclusion. But the possibility in I exists. Hence conclusion I follows.
Again, Some cooks are merchants (I) à conversion à Some merchants are cooks (I). Hence conclusion II follows.
Answer is: e

7). There is no negative statement but both conclusions are negative. Hence neither I nor II follows.
Answer is: d  

8). Some doctors are lawyers (I) + No lawyers is a man (E) = I + E = O = Some doctors are not men Hence conclusion I follows.
No lawyer is a man (E) + No man is honest (E) = E + E = No conclusion. Hence conclusion II does not follow.
Answer is: a

9). No lawyer is man (E) + No man is honest (E) = E + E = No conclusion. Hence conclusion I does not follow.
Again, Some doctors are lawyers (I) + No lawyer is a men (E) = I + E = O = Some doctors are not man. Hence conclusion II does not follow.  
Answer is: d  

10). Some letters are pages (I) + All pages are books (A) = I + A = I = Some letters are books. Hence conclusion I follows.
Again, All pages are books (A) à conversion à Some books are pages (I). Hence conclusion II also follows.
Answer is: e  

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