Coding-Decoding Questions and Answers

Answer: C

In the second and third statements, the common code is '9a' and the common word is 'not'.

So, '9a' means 'not'.
In the first and second statements, the common codes are '7c' and '3a' and the common words are 'is' and 'Eternal'.
So, in the second statement, '8b' means 'enmity'.

Answer: B

- There are 7 letters in the word

- The middle letter has been left intact

- The first and the last letters  of the word have interchanged their position. Similarly, the second and the third letters and the fifth and sixth letters have interchanged their position.

Answer: A

The alphabets are soded as shown :

So, G is coded as 3,
R as 8,
E as 1   and
C as 9.
Thus, GREECE is coded as 381191.

Answer: A

Correct answer: NCPQJG

The shift alternates. Taking TOGETHER against RQEGRJCT: T→R is two back, O→Q two forward, G→E two back, E→G two forward, and so on in turn. PAROLE therefore gives P→N, A→C, R→P, O→Q, L→J, E→G, that is NCPQJG. Reading only the first letter would not distinguish this from a simple shift, which is why the alternation has to be checked along the whole word.

Answer: D

Correct answer: CHRONRD

Each letter steps one place back, as TRIPPLE to SQHOOKD shows. DISPOSE therefore gives D→C, I→H, S→R, P→O, O→N, S→R, E→D, that is CHRONRD. The wrong options step forward instead, which turns the pattern the wrong way round throughout.

Answer: B

The alphabets are coded as shown :

So, in SEARCH,
S ia coded as 2,
E as 1,
A as 4,
R as 6,
C as 7,
H as 3.
Thus, the code for SEARCH is 214673.

Answer: C

In statements A and B, the common code word is 'na' and the common word is 'water'.

So, 'na' means 'water'.

In statements B and D, the common code word is 'jo' and the common word is 'life'.
So, 'jo' means 'life'.
Thus, in statements B, 'tod' represents 'is'.

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: A

The alphabets are coded as shown :

So, In TWELVE ,
T is coded as 8,
W as 6,
E as 3,
L as 2,
V as 0.
Thus, the code for  TWELVE is 863203.

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.