Odd One Out – Railway Reasoning part – VI

Total Questions: 50

31. Identify the incorrect figure. [RRB NTPC 24/07/2021 (Morning)]

Correct Answer: (d) D
Solution:

Fig. (d) is different from others.

32. Select the odd one. [RRB NTPC 24/07/2021 (Evening)]

Correct Answer: (d) Tubewell
Solution:

Out of the four words listed, three are alike : Lake, River, Pond because these are all natural sources of water ; But Tubewell is different from them because it is artificially made by Humans.

33. Select the number-pair that is different from the rest. [RRB NTPC 24/07/2021 (Evening)]

Correct Answer: (a) 23,216
Solution:

Out of the four number - pair listed, three are alike : (53, 225), (37,441), (29,324) ;
Because 5 × 3 = 15 ⇒ 15² = 225 ;
3 × 7 = 21 ⇒ 21² = 441 ;
2 × 9 = 18 ⇒ 18² = 324 ;
So, the number-pair that is different from the rest is (23,216) ;

34. Identify the number that DOES NOT belong to the following series: [RRB NTPC 24/07/2021 (Evening)]

785, 851, 796, 840, 807, 827

Correct Answer: (a) 827
Solution:

785, 851, 796, 840, 807, 827
There are two alternative series out of which First series is :
785 + 11 = 796, 796 + 11 = 807
Another series is
851 – 11 = 840, 840 – 11 = 829
Then 827 does not belong to the following series.

35. Select the letter cluster that is different. [RRB NTPC 31/07/2021 (Morning)]

Correct Answer: (a) MKF
Solution:

Q – 2 = O, O – 4 = K
W – 2 = U, U – 4 = Q
R – 2 = P, P – 4 = L
MKF is different from them because it does not follow this logic.

36. Select the option in which the two numbers share a different relationship from that shared by the two numbers in the rest of the options. [RRB NTPC 31/07/2021 (Morning)]

Correct Answer: (c) 3,25
Solution:

3, 25 is different from others
Logic :
8, (8 + 1)² = 81 ⇒ 7, (7 + 1)² = 64
5, (5 + 1)² = 36

37. Select the number that is different from the rest. [RRB NTPC 31/07/2021 (Evening)]

Correct Answer: (d) 175
Solution:

All numbers are multiple of 10 except 175.

38. Find the ODD one out from the given options. [RRB JE 22/05/2019 (Afternoon)]

Correct Answer: (a) 1975 : 1579
Solution:

Except option (a), all the options follows the same pattern,

39. Find the ODD one out from the given options. [RRB JE 22/05/2019 (Afternoon)]

Correct Answer: (c) 153
Solution:

except 153, all numbers are formed by using digit 1, 3 and 7.

40. Find the ODD one out from the given options. [RRB JE 22/05/2019 (Evening)]

Correct Answer: (a) 49
Solution:

[n² - 1]
24 = 5² - 1, 15 = 4² - 1, 80 = 9² - 1,
49 ≠ 7² - 1 = 48