Odd One Out – Railway Reasoning

Total Questions: 50

31. Select an option which is different from the rest in a certain way. [NTPC CBT – I (11/02/2021 Morning)]

Correct Answer: (a) G J B
Solution:

Except first all have difference of three.

32. Select the odd one. [NTPC CBT – I (16/02/2021 Evening)]

Correct Answer: (b) 105
Solution:

All are products of two prime numbers, except 105.

33. Select the odd one. [NTPC CBT – I (27/02/2021 Evening)]

Correct Answer: (a) G J H
Solution:

Except option (a), the number in each term is a prime number.

34. Select the odd one. [NTPC CBT – I (07/03/2021 Morning)]

Correct Answer: (b) OPML
Solution:

Sum of place value of alphabet letters is equal to 54 except option ‘b’.

35. Select the odd one. [NTPC CBT – I (09/03/2021 Morning)]

Correct Answer: (b) Speed
Solution:

Except for speed, all others are parts of the vehicle.

36. Select the odd one. [RRB NTPC (04/03/2021 Morning)]

Correct Answer: (d) Carpenter
Solution:

All are furniture but carpenters are human beings who make furniture.

37. Select the odd one. [NTPC CBT – I (06/04/2021 Evening)]

Correct Answer: (c) Black
Solution:

In the spectrum of light there are 7 colours but black is not there.

38. Select the odd one. [NTPC CBT – I (26/07/2021 Morning)]

Correct Answer: (d) 8,72
Solution:

Here the pattern is:
For the pair (5, 42): 5, 6, 7 i.e. 6 × 7 = 42;
For the pair (5, 110): 9, 10, 11
i.e. 10 × 11 = 110;
For the pair (13, 210): 13, 14, 15
i.e. 14 × 15 = 210;
But for the number pair (8 , 72) this pattern does not follow.

39. Select the number-pair that is different. [NTPC CBT – I (26/07/2021 Evening)]

Correct Answer: (d) 38,54
Solution:

2 × 7 − 1 × 4 = 10
5 × 6 − 4 × 5 = 10
9 × 2 − 1 × 8 = 10
3 × 8 − 5 × 4 ≠ 10

40. Find the ODD one from the given option. [RRB JE 25/05/2019 (Morning)]

Correct Answer: (c)
Solution: