Coding-Decoding Questions and Answers

Answer: C

HAT is 58.

The value of a word is twice the sum of its letters' alphabet positions: Z = 26 x 2 = 52, and BAT = (2 + 1 + 20) x 2 = 46.

HAT = (8 + 1 + 20) x 2 = 29 x 2 = 58. HAT differs from BAT only in its first letter, H (8) instead of B (2), which adds (8 - 2) x 2 = 12 to 46, giving 58 again. 48 and 50 add too little, and 60 adds too much.

Answer: B

Correct answer: CPNCBZ

Each letter moves one place forward: M→N, A→B, D→E, R→S, A→B, S→T. Applying the same shift to BOMBAY gives B→C, O→P, M→N, B→C, A→B, Y→Z. The last letter is the one to watch: Y wraps round to Z, and the options differ chiefly in whether that step was taken.

Answer: A

Correct answer: CHRONRD

Each letter moves one place back: T→S, R→Q, I→H, P→O, P→O, L→K, E→D. DISPOSE therefore becomes D→C, I→H, S→R, P→O, O→N, S→R, E→D, giving CHRONRD. Checking the double letters is the quickest test: the two P’s in TRIPPLE both became O, so the two S’s of DISPOSE must both become R.

Answer: C

Correct answer: LNTKCHMF

Both examples use the same rule, a shift of one place back: COULD gives BNTKC and MARGIN gives LZQFHM. MOULDING therefore becomes M→L, O→N, U→T, L→K, D→C, I→H, N→M, G→F. Two examples are given precisely so the rule can be confirmed rather than guessed from one.

Answer: A

Correct answer: QDFHS

Two operations are combined. Reverse MONKEY to get YEKNOM, then move each letter one place back: Y→X, E→D, K→J, N→M, O→N, M→L, giving XDJMNL. TIGER reversed is REGIT, and stepping each back gives R→Q, E→D, G→F, I→H, T→S, so the code is QDFHS.

Answer: A

Correct answer: EOJDJEFM

Reverse COMPUTER to RETUPMOC, then advance every letter by one except the first and last, which stay as they are: R, E→F, T→U, U→V, P→Q, M→N, O→P, C. That gives RFUVQNPC. MEDICINE reversed is ENICIDEM; keeping the E and the M and advancing the six between them gives E, N→O, I→J, C→D, I→J, D→E, E→F, M, so the code is EOJDJEFM.

Answer: B

Explanation:

Clearly,

T -1 = S
A -1 = Z
P -1 = O

So FREEZE will be,

F -1 E
R -1 Q
E -1 D
E -1 D
Z -1 Y
E -1 D

Answer: D

Explanation:
In given word, word is increasing and decreasing by one alternatively as,
S +1 T
I -1 H
K +1 L
K -1 J
I +1 J
M -1 L

So,
 in the same way TRAINING will be UQBHOHOF

Answer: B

Explanation:
In the given word, we can analyse that,
M is decreased by 1, M-1 = L, and other words are interchanged,

EN - NE
TI - IT
ON - NO

So, 
PATTERN will be

P -1 O
AT - TA
TE - ET
RN - NR

Answer: A

Explanation:
Clearly every letter is increased by 1 as
M +1 N
A +1 B
D +1 E
R +1 S
A +1 B
S +1 T

So,
 after increasing every character in work BOMBAY by 1, we get