Series – Railway Reasoning part – 12

Total Questions: 50

11. B7K, KB7, ? [RRB NTPC 01/04/2021 (Morning)]

Correct Answer: (a) 7KB
Solution:

Logic : - Last alphabet comes in 1st place and then the remaining are written. Next will be 7KB

12. 3, 4, 0, 9, - 7, ? [RRB NTPC 01/04/2021 (Morning)]

Correct Answer: (c) 18
Solution:

13. MNOP, HIJK, ? [RRB NTPC 01/04/2021 (Morning)]

Correct Answer: (a) CDEF
Solution:

M - 5 = H, N - 5 = I, O - 5 = J, P - 5 = K
H - 5 = C, I - 5 = D, J - 5 = E, K - 5 = F
Next = CDEF

14. 3, 4, 31, 156, ?. [RRB NTPC 01/04/2021 (Morning)]

Correct Answer: (d) 499
Solution:

15. 7D25, 12F16, ? , 37J4, 57L1 [RRB NTPC 01/04/2021 (Evening)]

Correct Answer: (c) 22H9
Solution:

7 + 5 = 12 , 12 + 10 = 22 , 22 + 15 = 37 , 37 + 20 = 57
D + 2 = F , F +2 = H , H + 2 = J , J + 2 = L
5² = 25 , 4²=16 , 3² = 9 , 2² = 4 , 1² = 1.

16. 98, 126, 154, 182, 210, ? [RRB NTPC 01/04/2021 (Evening)]

Correct Answer: (d) 238
Solution:

Logic- 98 + 28 = 126 , 126 + 28 = 154 , 154 + 28 = 182 , 182 + 28 = 210 , 210 + 28 = 238

17. 4, 5,7, 13, 37, ? [RRB NTPC 03/04/2021 (Morning)]

Correct Answer: (b) 157
Solution:

18. C1D3, D2F5, ?, F4J9 [RRB NTPC 03/04/2021 (Morning)]

Correct Answer: (a) E3H7
Solution:

19. 0, 1 ,8, 27, ? [RRB NTPC 03/04/2021 (Morning)]

Correct Answer: (d) 64
Solution:

Cube of 0 = 0
Cube of 1 = 1, Cube of 2 = 8
Cube of 3 = 27 , Cube of 4 = 64

20. 11, 14, 19, 26, ?, 46 [RRB NTPC 03/04/2021 (Morning)]

Correct Answer: (a) 35
Solution:

11 + 3 = 14, 14 + 5 = 19
19 + 7 = 26, 26 + 9 = 35
35 + 11 = 46