SYLLOGISM – Railway Reasoning part – 4

Total Questions: 50

31. Which of the conclusions follows from the given statements? [RRB NTPC 30/12/2020 (Evening)]

Statements:
1. All phones are pens
2. Some pens are pencils.
Conclusions:
I. Some phones are pencils
II. Some pencils are phones
III. Some pencils are pens.
IV. Some pens are phones

Correct Answer: (d) Only conclusions III and IV follow
Solution:From the above diagram, we can say, some pencils are pens and some pens are phones.
i.e. only conclusions III and IV follow.

32. Which of the conclusions follows from the given statements? [RRB NTPC 04/01/2021 (Morning)]

Statements:
Some women are wise.
All wise are engineers.
Conclusions:
I. Some women are engineers.
II. All engineers are wise.

Correct Answer: (b) Only conclusion (I) follows.
Solution:From the above diagram, we observe that only conclusion (1) follows.

33. If ‘all philosophers are rationalists’ and ‘Socrates is a philosopher’, then which of the given conclusions follows ? [RRB NTPC 04/01/2021 (Evening)]

Correct Answer: (d) Socrates is a rationalist.
Solution:From the above diagram, it is clear that Socrates is a rationalist.

34. Which of the conclusions follows from the given statements? [RRB NTPC 05/01/2021 (Morning)]

Statements:
1. All the cars are four-wheelers.
2. All the four-wheelers are vehicles.
Conclusions:
I All the vehicles are four wheelers.
II. All the cars are vehicles.

Correct Answer: (c) Only II
Solution:From the given statements we can draw the following venn diagramSo, from the diagram we can say that only conclusion II follows.

35. Which of the conclusions follows from the given statements? [RRB NTPC 05/01/2021 (Evening)]

Statements:
1. All engineers are graduates.
2. All graduates are successful.
Conclusion:
I. All successful are graduates.
II. All engineers are successful.

Correct Answer: (b) Only II
Solution:From the above venn diagram, it is clear that only conclusion (II) follows.

36. Which of the conclusions follows from the given statements? [RRB NTPC 07/01/2021 (Morning)]

Statements:
A. All papayas are fruits
B. Some fruits are vegetables
C. All vegetables are vegan
Conclusions:
i. Some vegetables are papayas
ii. Some vegans are fruits
iii. Some vegans are papayas
iv. Some fruits are papayas

Correct Answer: (c) Only (ii) and (iv) follow
Solution:

only (ii) and (iv) follow.

37. Which of the conclusions follows from the given statements? [RRB NTPC 07/01/2021 (Morning)]

Statements:
All hill stations have an echo-point
P is a hill station.
Conclusions:
1. P has an echo-point
2. Places other than hill stations do not
have echo-points

Correct Answer: (b) Only conclusion 1 follows
Solution:

only conclusion 1 follows.

38. Which of the conclusions follows from the given statements? [RRB NTPC 07/01/2021 (Evening) ]

Statement 1: Only cows are mammals.
Statement 2: No scientists are mammals
Conclusion 1: Some cows are scientists.
Conclusion 2: Some scientists are mammals.

Correct Answer: (d) Neither conclusion 1 nor conclusion 2 follow
Solution:

39. Which of the conclusions follows from the given statements? [RRB NTPC 08/01/2021 (Morning)]

Statements
Some tigers are rats.
All rats are elephants.
All tigers are cats.
Conclusions
I. Some cats are elephants.
II. Some elephants are tigers.
III. Some cats are rats.

Correct Answer: (b) All conclusions I, II and III follow.
Solution:From the above diagram it is clear that all conclusions I, II and III follow.

40. Which of the conclusions follows from the given statements? [RRB NTPC 08/01/2021 (Morning)]

Statements:
All cricketers are players.
Some cricketers are fielders.
Conclusions:
1. Some fielders are cricketers.
2. Some fielders are players.

Correct Answer: (a) Both conclusions 1 and 2 follow.
Solution:From the above diagram, it is clear that both conclusion 1 and 2 follow.