SYLLOGISM – Railway Reasoning part – 5

Total Questions: 50

1. Which of the conclusions follows from the given statements? [RRB NTPC 16/01/2021 (Morning)]

Statements:
All mobiles are watches.
Some watches are not books.
Conclusions :
1. Some mobiles are watches.
2. All mobiles are books.

Correct Answer: (c) Only conclusion 1 follows.
Solution:From the above diagram it is clear that All mobiles are watches so some mobiles are watches is also true.

2. Which of the conclusions follows from the given statements? [RRB NTPC 16/01/2021 (Evening)]

Statements :
A. All boys are intelligent.
B. All boys are smart.
Conclusion :
1. Some boys are smart and intelligent.
2. All intelligent are smart.

Correct Answer: (c) Only conclusion 1 is true.
Solution:In the given statement we see that all boys are intelligent and smart So the only conclusion I is true.some boys are smart and intelligent is not valid.

3. Answer the given statements from the given option : [RRB NTPC 17/01/2021 (Evening)]

Statement 1: All bags are toys.
Statement 2: Some toys are suitcases.

Correct Answer: (d) Some bags are toys.
Solution:From the above diagram it is clear that some bags are toys.

4. Answer the given statements from the given option : [RRB NTPC 18/01/2021 (Morning)]

Statement I : Some locks are keys.
Statement II : All keys are doors.

Correct Answer: (b) Some locks are doors .
Solution:

From the given statements we can draw the following diagram :
From the above diagram, we can see that only conclusion (b) follows.

5. Answer the given statements from the given option : [RRB NTPC 20/01/2021 (Morning)]

Statements :
Some Pens are Inks
Some Inks are Pencils.
All Pencils are Pens.

Correct Answer: (b) Some Pens are Pencils
Solution:

From the given statements we can draw the following diagram :So, only the assumption ‘Some Pens are Pencils’ is implicit.

6. Which of the conclusions follows from the given statements? [RRB NTPC 20/01/2021 (Morning)]

Statement :
All Matter is space.
Some Mass is Matter.
Conclusions :
A. All mass is Space
B. Some mass is Space.
C. Some Space is Mass.
D. All space is Mass.
E. All Matter is Mass.

Correct Answer: (b) B, C
Solution:

From the given statements we can draw the following diagram :So, the conclusions B, C are correct.

7. Which of the assumptions given in the options is implicit in the statements ? [RRB NTPC 20/01/2021 (Morning)]

Statements :
All Explosives are Sound.
Some Bombs are Explosively Sound.
Some lights are Bombs but not Sound.

Correct Answer: (d) Some Sounds are only Bombs.
Solution:

From the given statements we can draw the following diagram :

So, the only conclusion Some Sounds are
only Bombs is implicit.

8. Which of the conclusions follows from the given statements? [RRB NTPC 20/01/2021 (Morning) ]

Statements :
Some Benches are Nails.
All Benches and Nails are Metal.
Some woods are Nails.
Assumption :
A. Some Woods are only Metal.
B. Some Woods are only Benches
C. Some Benches are Woods
D. Some Metal are Woods.

Correct Answer: (a) D
Solution:

From the given statements we can draw the following diagram :
From the given statements we can draw the following diagram :

9. Consider the given statements and decide which of the given conclusions do NOT follow from the statements. [RRB NTPC 20/01/2021 (Morning)]

Statements :
All Bulls are Black but not Cows.
All Cows are Black.
Conclusions :
1. Some Cows are Bulls.
2. All Blacks are Cows
3. All Blacks are Bulls.

Correct Answer: (c) 1, 2, 3
Solution:

From the given statements we can draw the following diagram :
So, None of the three conclusions: Some Cows are Bulls, All Blacks are Cows, All Blacks are Bulls follows.

10. Which of the conclusions follows from the given statements? [RRB NTPC 21/01/2021 (Morning)]

Statements :
Some kiwis are green.
Some apples are kiwis.
Conclusions : 
1. Some kiwis are yellow.
2. An apple is green.

Correct Answer: (a) Neither conclusion 1 nor 2 follows.
Solution:From the above diagram it can be observed that yellow is not mentioned anywhere so conclusion 1 does not follow. And there is no relation known between Apples and green so conclusion 2 also does not follow.