Odd One Out – Railway Reasoning part – III

Total Questions: 50

21. Select the odd one. [RRB NTPC 23/01/2021 (Morning)]

Correct Answer: (b) D
Solution:

Sides of inner figure = side of outer figure + 1

22. Select the number that is different from the rest. [RRB NTPC 23/01/2021 (Morning)]

Correct Answer: (c) 4174
Solution:

Difference of sum of first two digits and sum of last two digits = 5
(9 + 6) - (3 + 7) = 5 → (5 + 9) - (5 + 4) = 5
(7 + 4) - (4 + 1) ≠ 5 → (6 + 2) - (2 + 1) = 5

23. Identify the number-pair that is different from the rest. [RRB NTPC 25/01/2021 (Morning)]

Correct Answer: (a) 19 : 25
Solution:

Except 19 : 25, all pairs consist of prime numbers.

24. Choose the number pair that is different from the other three. [RRB NTPC 27/01/2021 (Evening)]

Correct Answer: (a) 0 : 6
Solution:

Except option A, the difference of each number pair is a perfect square.

25. Select the number that is different from the rest. [RRB NTPC 28/01/2021 (Morning)]

Correct Answer: (d) 729
Solution:

729 is different from others because 729 is a cube of 9.

26. Select the one that is different from others [RRB NTPC 29/01/2021 (Morning)]

Mic, Loudspeaker, Projector, Amplifier

Correct Answer: (a) Projector
Solution:

All are related to sound but Projector is for displaying.

27. Select the odd one. [RRB NTPC 29/01/2021 (Evening)]

Correct Answer: (b) TALEN
Solution:

Except option (b), all letter clusters are formed with the same letters.

28. Select the odd one. [RRB NTPC 29/01/2021 (Evening)]

Correct Answer: (b) Moon
Solution:

Moon is the natural satellite of Earth and the rest are planets.

29. Select the odd one. [RRB NTPC 29/01/2021 (Evening)]

Correct Answer: (d) 413
Solution:

Except 413, all are divisible by 3.

30. Select the odd one. [RRB NTPC 29/01/2021 (Evening)]

Correct Answer: (c) Badminton
Solution:

In a badminton game more than one player is required, but in all other given games there is only one player playing at a time.