Odd One Out – Railway Reasoning part – II

Total Questions: 50

1. Find the odd figure: [RRB ALP Tier - I 21/08/2018 (Afternoon)]

Correct Answer: (b)
Solution:

In figure 2, the two shaded portions are of the same big triangle, while in the rest figures, the 2 shaded portions are of 2 different big triangles.

2. Select the picture that does not belong to the group.

Correct Answer: (d)
Solution:The only figure in which lines are touching on vertex.

3. Select the picture that does not belong to the group [RRB ALP 30/08/2018 (Afternoon)]

Correct Answer: (d) A
Solution:

4. Select the number triad that is different from the rest. [Group-D 09/09/2022 (Morning)]

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)

Correct Answer: (b) 99, 79, 60
Solution:


(34, 22, 12) ⇒ 12 + 34/2 = 23 − 1 = 22
(47, 33, 21) ⇒ 47 + 21/2 = 34 − 1 = 33
(79, 61, 45) ⇒ 79 + 45/2 = 62 − 1 = 61
(99, 79, 60) ⇒ 99 + 60/2 = 159/2 − 1
(not followed)

5. Select the number-pair that does not belong to that group. [Level 6 (09/05/2022) Shift 2]

Correct Answer: (d) 343 - 5
Solution:

Pattern : First Number = (second number - 1)³
125 = (6 − 1)³, 729 = (10 − 1)³
512 = (9 − 1)³, 343 = (8 − 1)³

6. Select the number-pair that does not belong to that group. [Level 4 (10/05/2022) Shift 1]

Correct Answer: (c) 333 : 160
Solution:

First number - 3/2 = second number , all options follows this pattern
except c
127 - 3/2 = 62 , 473 - 3/2 = 235
333 - 3/2 = 165 , 869 - 3/2 = 433

7. Select the number-pair that does NOT belong to that group. [Level 5 (12/06/2022) Shift 1]

Correct Answer: (d) 15 : 208
Solution:

21 : 420 = 21² - 21 = 420
25 : 600 = 25² - 25 = 600
17 : 272 = 17² - 17 = 272
15 : 208 = 15² - 15 = 208

8. Select the number-pair that does NOT belong to that group. [Level 5 (12/06/2022) Shift 2]

Correct Answer: (c) 14 : 198
Solution:

22 : 485 = 22² + 1 = 485
20 : 401 = 20² + 1 = 401
14 : 198 = 14² + 2 = 198
18 : 325 = 18² + 1 = 325

9. Select the number-pair that does not belong to that group. [Level 2 (13/06/2022) Shift 1]

Correct Answer: (b) 18 : 107
Solution:

14 : 85 = 14 × 6 + 1 = 85
18 : 107 = 18 × 6 + 1 ≠ 107
16 : 97 = 16 × 6 + 1 = 97
22 : 133 = 22 × 6 + 1 = 133

10. Select the number-pair that does NOT belong to that group. [Level 3 (14/06/2022) Shift 2]

Correct Answer: (a) 19 : 363
Solution:

19 : 363 = 19² + 2 = 363
14 : 197 = 14² + 1 = 197
17 : 290 = 17² + 1 = 290
13 : 170 = 13² + 1 = 170