Coding-Decoding Questions and Answers

Answer: B

Correct answer: FKOALD

Every letter moves four places back, as GEORGE to CAKNCA shows. JOSEPH therefore gives J→F, O→K, S→O, E→A, P→L, H→D, that is FKOALD. The wrong options have the right letters in the wrong order, so working through the word in sequence rather than matching letters is what settles it.

Answer: A

Correct answer: IRPICNLAP

The word is divided into groups of three and each group is reversed in place. DIRECTION gives DIR, ECT and ION, which reverse to RID, TCE and NOI, making RIDTCENOI. PRINCIPAL gives PRI, NCI and PAL, which reverse to IRP, ICN and LAP, so the code is IRPICNLAP.

Answer: D

Correct answer: CRIUCALR

The first and last letters stay put and the six between them are exchanged in pairs. CALANDER keeps C and R, and the pairs AL, AN and DE become LA, NA and ED, giving CLANAEDR. CIRCULAR keeps C and R, and the pairs IR, CU and LA become RI, UC and AL, so the code is CRIUCALR.

Answer: B

Correct answer: TOOT

Consonants advance one place and vowels stay as they are. GOLD gives H, O, M, E; COME gives D, O, N, E, the final E being a vowel and so unchanged; and CORD gives D, O, S, E. SONS therefore gives S→T, O unchanged, N→O, S→T, that is TOOT. Treating every letter alike would give TPOT, which is the first distractor.

Answer: D

Correct answer: WGJHV

Reverse the word, then apply an alternating shift of three forward and one back. CLOUD reversed is DUOLC, and D+3=G, U−1=T, O+3=R, L−1=K, C+3=F gives GTRKF. SIGHT reversed is THGIS, so T+3=W, H−1=G, G+3=J, I−1=H, S+3=V, giving WGJHV.

Answer: A

Here each word is coded as follows:

The first word of the code for a corresponding word is the alphabet preceding 2 places to the last letter of the word in English Alphabetical order.

The last letter of the word for a corresponding word is the alphabet succeeding 2 places to the first word of the word in English Alphabetical order. The number in the middle of code is the absolute value of the difference of the position of the last alphabet for a word in English Alphabetical order and the number of alphabets in each corresponding word.

For example:

Trees: The first alphabet of the code is Q, which is preceding 2 places to S. The last alphabet of the code is V, which is succeeding 2 places to T.

The number is: 19(position of S) - 5(number of letters) = 14

Similarly,

Thanks for the treat is coded as ‘Q13V P15H C2V R15V’

Answer: C

Here each word is coded as follows:

The first word of the code for a corresponding word is the alphabet preceding 2 places to the last letter of the word in English Alphabetical order.

The last letter of the word for a corresponding word is the alphabet succeeding 2 places to the first word of the word in English Alphabetical order.

The number in the middle of code is the absolute value of the difference of the position of the last alphabet for a word in English Alphabetical order and the number of alphabets in each corresponding word.

For example:

Trees: The first alphabet of the code is Q, which is preceding 2 places to S. The last alphabet of the code is V, which is succeeding 2 places to T.

The number is: 19(position of S) - 5(number of letters) = 14

Similarly,

Movies is coded as ‘Q13O

Answer: C

Here each word is coded as follows:

The first word of the code for a corresponding word is the alphabet preceding 2 places to the last letter of the word in English Alphabetical order.

The last letter of the word for a corresponding word is the alphabet succeeding 2 places to the first word of the word in English Alphabetical order.

The number in the middle of code is the absolute value of the difference of the position of the last alphabet for a word in English Alphabetical order and the number of alphabets in each corresponding word.

For example:

Trees: The first alphabet of the code is Q, which is preceding 2 places to S. The last alphabet of the code is V, which is succeeding 2 places to T.

The number is: 19(position of S) - 5(number of letters) = 14

Similarly,

Happy for you is coded as W20J P15H S18 A

Answer: B

There are 11 letters each in the given word and its code. It means that there is one code letter for each letter of the given word. After careful observation of the given word its code it is clear that the code has been generated by rearranging the letters of the given word.
The middle letter of the given word remains at its position while other letters of both sides of it are rearrange in a certain way

Answer: C

There are eight letters in the given word. in the first step the letters of the given word have been divided into two equal parts:
STAN and DING
In the second step, the letters each part have been written in the reverse order.
NATS and GIND
Similary,
Step I PROD and UCES
Step II DORP and SECU