Series – Railway Reasoning part – 3

Total Questions: 50

21. Select the option that represents the letters that, when placed from left to right in the blanks below, will complete the letter series. [Group - D 09/09/2022 (Morning)]

K_G_D_LGP_KL_PDK_G_D

Correct Answer: (c) LPKDGLP
Solution:

Given, K_G_D_LGP_KL_PDK_G_D
K L G P D / K LGP D / KL G PD / K L G P D
⇒ LPKDGLP

22. 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 09/09/2022 (Afternoon)]

NLA_XN_BF_NL_F_NL_ _X

Correct Answer: (c) FLXCXDF
Solution:

23. 154, 134, 116, ?, 86, 74, 64, 56 [Group - D 09/09/2022 (Afternoon)]

Correct Answer: (a) 100
Solution:

24. 96,98,102,110,126,? [Group - D 09/09/2022 (Evening)]

Correct Answer: (c) 158
Solution:

25. 67,67,56,?,45,45,34,34,23,23,12 [Group - D 09/09/2022 (Evening)]

Correct Answer: (d) 56
Solution:

26. P5U, N7U, L3O, J8R. ? [Group - D 09/09/2022 (Evening)]

Correct Answer: (c) H2J
Solution:

Given, P5U, N7U, L3O, J8R.
Logic used :- alphabetical position of first letter + second number = third letter
I.e ( P5U ) ⇒ P(16) + 5 = U(21)
( N7U ) ⇒ N(14) + 7 = U(21)
( L3O) ⇒ L(12) + 3 = O(15)
Similarly, ( H2J ) ⇒ H(8) + 2 = J(10)

27. RM13C, WR17H, BW21M, GB25R.? [Group - D 12/09/2022 (Morning)]

Correct Answer: (b) LG29W
Solution:

 For the first letter of each
word:- R + 5 = W, W + 5 = B, B + 5 = G, G + 5 = L
For the second letter of each word:-
M + 5 = R , R + 5 = W, W + 5 = B, B + 5 = G
For the third number of each word:-
13 + 4 = 17, 17 + 4 = 21, 21 + 4 = 25, 25 + 4 = 29
For the fourth letter of each word:- C + 5
= H, H + 5 = M, M + 5 = R , R + 5 = W
Hence, LG29W

28. If each of the following numbers is multiplied by 2 and the digits of each number are written in reverse order and then the numbers are arranged in descending order, the position of how many numbers will NOT change? [Group - D 12/09/2022 (Morning)]

57, 87, 35, 97, 56, 74

Correct Answer: (b) One
Solution:

So we can see that only one number (211) will NOT change.

29. 176, 174, 171, 166, 159, ? [Group - D 12/09/2022 (Morning)]

Correct Answer: (c) 148
Solution:

Logic : Consecutive prime numbers have been subtracted.

30. 44, 42, 38, 36, 32, 30, 26, 24, ? [Group - D 12/09/2022 ( Afternoon )]

Correct Answer: (d) 20
Solution: