Odd One Out – Railway Reasoning part – IV

Total Questions: 50

21. Pick the odd one out. [RRB NTPC 17/02/2021 (Morning)]

Correct Answer: (c) 5 – 31
Solution:

Second Number = square of first number + 1
101 = 10² + 1 ⇒ 50 = 7² + 1
10 = 3² + 1
But, 31 ≠ 5² + 1

22. Pick the odd one out. [RRB NTPC 17/02/2021 (Morning)]

Correct Answer: (a) SLO
Solution:

Except option (a), the difference between 2nd letter and 3rd letter = 4
SLO → L + 3 = O ⇒ GQU → Q + 4 = U
REI → E + 4 = I ⇒ DOS → O + 4 = S

23. Select the odd group. [RRB NTPC 17/02/2021 (Evening)]

Correct Answer: (c) Physics, Chemistry, Biology
Solution:

All are related to science but in all other different subjects are mentioned.

24. Pick the odd letter-cluster. [RRB NTPC 17/02/2021 (Evening)]

Correct Answer: (d) EHK
Solution:

B + 2 = D, D + 2 = F
G + 2 = I, I + 2 = K ⇒ P + 2 = R, R + 2 = T
E + 2 ≠ H, H + 2 ≠ K

25. Select the odd one. [RRB NTPC 22/02/2021 (Morning)]

Correct Answer: (c) Time
Solution:

All are related to a particular year of time.

26. Which one is different? [RRB NTPC 22/02/2021 (Morning)]

Correct Answer: (d)
Solution:

27. Identify the series that is different from the rest. [RRB NTPC 22/02/2021 (Morning)]

Correct Answer: (b) 243, 81, 27
Solution:

In all series except (b), the next number is the square root of the previous number.

28. Select the option in which the words do NOT share the same relationship as that shared by the rest. [RRB NTPC 22/02/2021 (Evening)]

Correct Answer: (d) Fruit : Tree
Solution:

Parrot is a bird, Carrot is vegetable and car is vehicle but fruit is not tree.

29. Pick the odd one out. [RRB NTPC 22/02/2021 (Evening)]

Correct Answer: (c) Patient
Solution:

All are healthcare professionals except Patient.

30. Select the odd one. [RRB NTPC 23/02/2021 (Morning)]

Correct Answer: (c) RBI
Solution:

All banks are regulated by RBI.