Series – Railway Reasoning part – 15

Total Questions: 62

21. 51, 53, 56, 61, 68,? [RPF S.I. 06/01/2019 (Afternoon)]

Correct Answer: (a) 79
Solution:

22. 11, 16, 32, 37, 74,? [RPF S.I. 10/01/2019 (Morning)]

Correct Answer: (a) 79
Solution:

23. 12, 25, 52, 107, 218,? [RPF S.I. 10/01/2019 (Morning)]

Correct Answer: (b) 441
Solution:

24. 33, 35, 38, 43, 50,? [RPF S.I. 10/01/2019 (Morning)]

Correct Answer: (d) 61
Solution:

25. 21, 23, 43, 133, 527, ? [RPF S.I. 10/01/2019 (Afternoon)]

Correct Answer: (b) 2641
Solution:

26. 423, 407, 434, 418, 445, ? [RPF S.I. 10/01/2019 (Afternoon)]

Correct Answer: (c) 429
Solution:

27. ST ,TU , UV, VW , ? [RRB ALP 09/08/2018 (Morning)]

Correct Answer: (a) WX
Solution:

28. BGL, DIN, ? , HMR [RRB ALP 09/08/2018 (Afternoon)]

Correct Answer: (c) FKP
Solution:

For the first letter → B + 2 = D, D + 2 = F, F + 2 = H
For the second letter → G + 2 = I, I + 2 = K, K + 2 = M
For the third letter → L + 2 = N, N + 2 = P, P + 2 = R
FKP is the right answer.

29. Select the WRONG number from the given series. [RRB ALP 10/08/2018 (Morning)]

6, 12, 20, 32, 42, 56, 72

Correct Answer: (d) 32
Solution:

2 x 3 = 6 , 3 x 4 = 12 , 4 x 5 = 20 , 5 x 6 = 30 (not 32) , 6 x 7 = 42 , 7 x 8 = 56 , 8 x 9 = 72 .

30. A, BC, DEF, GHIJ, ? [RRB ALP 10/08/2018 (Morning)]

Correct Answer: (d) KLMNO
Solution:

Logic : - In the given series the number of letters are increasing in the English alphabetical order. So, KLMNO is the correct answer.