Series – Railway Reasoning part – 2

Total Questions: 50

11. 7, 56, 28, 224, 112, ? [Group - D 23/08/2022 ( Afternoon)]

Correct Answer: (b) 896
Solution:

12. 12, 14, 31, 97, 393, ? [Group - D 23/08/2022 ( Evening)]

Correct Answer: (d) 1971
Solution:

12 × 1 + 2 = 14
14 × 2 + 3 = 31
31 × 3 + 4 = 97
97 × 4 + 5 = 393
393 × 5 + 6 = 1971
? = 1971

13. 8, 18, 38, 78, 158, ? [Group - D 23/08/2022 ( Evening)]

Correct Answer: (d) 318
Solution:

(previous term) × 2 + 2 = next term
8 × 2 + 2 = 18, 18 × 2 + 2 = 38
38 × 2 + 2 = 78, 78 × 2 + 2 = 158
158 × 2 + 2 = 318

14. 8G, 14C, 20Y, 26U, ? [Group - D 23/08/2022 ( Evening)]

Correct Answer: (c) 32Q
Solution:

15. 13, 17, 19, 23, 29, ? [Group - D 24/08/2022 ( Morning)]

Correct Answer: (c) 31
Solution:

Each terms of given series is a consecutive prime number
Therefore, the missing number will be 31.

16. 225, 221, 214, 201, 176, ? [Group - D 24/08/2022 ( Morning)]

Correct Answer: (c) 127
Solution:

17. Select the option in which the given letters when filled in the blank spaces of the letter series given below in the same order from left to right, will complete the series. [Group - D 24/08/2022 ( Afternoon)]

G _ Q _ A _ T _ N _ G T Q N _ G_Q N D

Correct Answer: (c) TNGQBGCT
Solution:

GTQNA / GTQNB / GTQNC / GTQND

18. Select the option that represents the letters that, when placed from left to right in the same sequence in the blanks below, will complete the letter series. [Group - D 24/08/2022 ( Evening)]

QW _ R _ XE _ Q _ ERQZE –

Correct Answer: (c) EQYRY

19. 5, 6, 10, 12, 15, ?, 20, 24 [Group - D 24/08/2022 ( Evening)]

Correct Answer: (c) 18
Solution:

20. 9, 10, 22, 69, 280, ? [Group - D 24/08/2022 ( Evening)]

Correct Answer: (a) 1405
Solution: