Coding Decoding – Railway Reasoning part – VI

Total Questions: 50

31. If 67 = 1764 and 93 = 729, then which of the given options will be the value of 74 = ? [RRB NTPC 13/01/2021 (Morning)]

Correct Answer: (c) 784
Solution:

(6 × 7)² = 1764
(9 × 3)² = 729
(7 × 4)² = 784

32. If J = 17 and N = 13, then JUNIOR = ? [RRB NTPC 13/01/2021 (Morning)]

Correct Answer: (b) 1761318129
Solution:

Place value of opposite of alphabets are written.
JUNIOR = 1761318129

33. If OFG = M and ICM = P, then find KDE = ? [RRB NTPC 13/01/2021 (Morning)]

Correct Answer: (d) I
Solution:

Sum of alphabetical position of second and third.
So, in KDE, D + E = 4 + 5 = 9 that is I.

34. If LAPTOP is coded as 28 16 36 and DROUGH is coded as 12 25 36, then what is the code for MEMBER? [RRB NTPC 13/01/2021 (Morning)]

Correct Answer: (a) 31 10 15
Solution:

Sum of alphabetical position from first and last is coded.
LAPTOP → L + P = 12 + 16 = 28,
A + O = 16, P + T = 36
DROUGH → D + H = 12, R + G = 25, O + U = 36
Similarly in MEMBER
→ M + R = 13 + 18 = 31,
→ E + E = 5 + 5 = 10
→ M + B = 13 + 2 = 15

35. If WOMEN is coded as XMPAS, then how is TREND coded? [RRB NTPC 13/01/2021 (Morning)]

Correct Answer: (a) UPHJI
Solution:

36. In a certain code language, ‘WMHKRDFL’ is written as ‘RGACMXYD’. What is the code for ‘RSLTKQMN’ in that code language? [RRB NTPC 13/01/2021 (Morning)]

Correct Answer: (d) MMELFKFF
Solution:

37. In a certain code language, BOTTLE is written as 88. How will GREEN be written as in that language? [RRB NTPC 13/01/2021 (Evening)]

Correct Answer: (d) 86
Solution:

Sum of place values of opposite letter

Code for BOTTLE:
B → Y = 25, O → L = 12, T → G = 7,
L → O = 15, E → V = 22

BOTTLE → 25 + 12 + 7 + 7 + 15 + 22 = 88

Similarly for GREEN,
G → T = 20, R → I = 9, E → V = 22,
N → M = 13
GREEN → 20 + 9 + 22 + 22 + 13 = 86

38. In a certain code language, R is written as 9, C is written as 24 and E is written as 22, how will RECITE be written as in that language? [RRB NTPC 13/01/2021 (Evening)]

Correct Answer: (a) 9222418722
Solution:

Place value of opposite letter
R → I = 9, C → X = 24, E → V = 22
Similarly,
I → R = 18, T → G = 7
Therefore, RECITE = 9222418722

39. In a certain language, N is written as 13, P is written as 11 and T is written as 7. How will APPARENT be written as in that language? [RRB NTPC 13/01/2021 (Evening)]

Correct Answer: (d) 26111126922137
Solution:

N = 14 → (27 - 14) = 13,
P = 16 → (27 - 16) = 11,
T = 20 → (27 - 20) = 7,
Similarly,
A = 1 → (27 - 1) = 26,
R = 18 → (27 - 18) = 9,
E = 5 → (27 - 5) = 22,
Code for APPARENT = 26111126922137

40. In a certain code language, S is written as 8, A is written as 26 and E is written as 22. How will STORAGE be written as in that language? [RRB NTPC 13/01/2021 (Evening)]

Correct Answer: (a) 87129262022
Solution:

In a certain code language, S is written as 8, A is written as 26 and E is written as 22.
That means, code for all the letters = (27 - place value of that letter);
T = 20 → (27 - 20) = 7
R = 18 → (27 - 18) = 9
G = 7 → (27 - 7) = 20
O = 15 → (27 - 15) = 12

So, the code for STORAGE will be: 87129262022