Coding and Decoding-Test 10

The letters in the first half and second half of the word are written in the reverse order and then each letter of the group so obtained is moved one step forward to get the code. Thus, we have :

SILVER  →  SIL/VER  →  LIS/REV  → MJT/SFW

The letters in the first half and second half of the word are written in the reverse order and in the group of letters so obtained, each letter in the first half is moved one step forward while that in the second half is moved one step backward, to get the code. Thus, we have :

STABILISED  → STABI/LISED  → IBATS/DESIL  →  JCBUT/CDRHK

The letters in the first half and second half of the word are written in the reverse order and in the group of letters so obtained, each letter in the first half is moved two steps forward while that in the second half is moved one step forward, to get the code. Thus, we have :

PERIODICAL  → PERIO/DICAL → OIREP/LACID → QKTGR/MBDJE

The letters of the word are written in a reverse order and in the group of letters so obtained, the first, third and fifth letters are each moved one step forward while the second and fourth letters are each moved one step backward to get the code.

The letters in the first half and second half of the word are written in the reverse order and then in the group of letters so obtained, the first, third, fifth and seventh letters are each moved one step forward while the second, fourth, sixth and eighth letters are each moved one step backward to get the code. Thus, we have :

TRIANGLE  →  TRIA/NGLE → AIR/ELGN → BHSSFKHM

The letters of the word are written in the reverse order and in the group of letters so obtained, the first, third and fifth letters are each moved three steps forward while the second and fourth letters are each moved one step backward to get the code.

The last four letters of the word are written in the reverse order, followed by the first three letters in the same order. In the group of letters so obtained, each letter except the middle letter is moved one step b ackward while the middle letter is moved one step forward to get the code. Thus, we have :

SUPREME  → SUP/REME → EMER/SUP → DLD/S/RTO.

The last four letters of the word are written in the reverse order, followed by the first four letters in the same order. In the group of letters so obtained, each of the first four letters is moved one step backward while each of the last four letters is moved one step forward to get the code. Thus, we have :

SHOULDER → SHOU/LDER → REDL/SHOU → QDCK/TIPV

All the letters of the word, except the last letter, are written in the reverse order and in the group of letters so obtained, each letter is moved two steps forward to get the code. Thus, we have :

AVOID → IOVAD → KQXCF

Divide the word into three groups of two letters each and write the letters of each roup in the reverse order. In the group of letters so obtained, the second, fourth and sixth letters are each moved one step forward to get the code. Thus, we have :

AN   SW   ER   →  NA   WS   RE   →  NBWTRF

Keeping the middle letter as it is, the first five and the last five letters of the word are written in the reverse order. In the group of letters so obtained, the first five letters are each moved one step forward, the middle letter is moved two steps forward and the last five letters are each moved one step backward to get the code. Thus, we have  :

CREDI/B/ILITY → IDERC/B/YTILI → JEFSD/D/XSHKH

If in the word, a letter is the nth letter from the beginning of the English alphabet, then in the code the corresponding letter is the nth letter from the end.

Each letter in the word is replaced by the letter which occupies the same position from the other end of the alphabet, to obtain the code.

Each letter in the word is replaced by the letter which occupies the same position from the other end of the alphabet, to obtain the code. Thus, A is replaced by Z, B by Y, C by X, D by W and so on.

Each letter in the word is replaced by the letter which occupies the same position from the other end of the alphabet, so obtain the code.

Each letter in the word is replaced by the letter which occupies the same position from the other end of the English alphabet, and the group of letters so obtained is then written in the reverse order to get the code. Thus, we have :

CRUELTY → XIFVOGB → BGOVFIX

Each letter of the word is one step behind the corresponding letter of the code.

Each letter of the word is two steps behind the corresponding letter of the code.

The order of letters of the word is reversed in the code. So, reverse the order of the letters in the code to get the word.

Clearly, the word can be obtained by moving the letters at even-numbered positions in the code, three steps forward and omitting those at odd-numbered positions.

The word is divided into groups of two letters each and then these groups are written in the reverse order.

ERMBVENO → ER/MB/VE/NO → NO/VE/MB/ER → NOVEMBER

Clearly, every letter is assigned a numerical code obtained by adding 6 to the numeral denoting the position of that letter in the english alphabet.

Thus, A is coded as (1 + 6) i.e. 7, B as (2 + 6) i.e. 8, C as (3 + 6) i.e. 9, …….., M as (13 + 6) i.e.19, ……, Z as (26 + 6) i.e. 32.

Since D, A, N, G, E, R are 4th, 1st, 14th, 7th, 5th and 18th letters in the English alphabet, so their respective codes are (4+6), (1+6), (14+6), (7+6), (5+6), (18+6) i.e. 10, 7, 20, 13, 11, 24. So, the code for DANGER is 10 – 7 – 20 – 13 – 11 – 24.

Clearly, putting A = 1, B = 2, C = 3, D = 4, E = 5, …… M = 13, X = 24, Y = 25, Z = 26, we have :

PEN = P + E + N = 16 + 5 + 14 = 35.

So, PAGE = P + A + G + E = 16 + 1 + 7 + 5 = 29.

Clearly, the order of letters in the word is reversed and then each letter is replaced by the numeral denoting its position in the English alphabet. Next, 2 is added to each numeral and the numerals so obtained are joined together physically to get the code. Thus, we have :

RED → DER →14/5/18 → 6/7/20 → 6720.

GREEN → NEERG → 14/5/5/18/7 → 16/7/7/20/9 → 1677209.

Clearly, vowels A, E, I, O, U are coded as 1, 2, 3, 4, 5 respectively. Each of the consonants in the word is moved one step forward to give the corresponding letter of the code. So, the code for ACID become 1D3E.