Olympiad Test: Coding Decoding - 2 - Class 8 MCQ

Letters placed at the even places in the given word interchange their position to define its code.

Letters placed at first, fourth and seventh places in the given word remain static, while the pair formed by letters placed at second and third gets replaced by pair formed by letters at fifth and sixth placed. The order of the letters in the pair also remains the same.

Letters placed at odd places in the given word move these steps backward, while those placed at even placed move these steps forward in the alphabetic order to define the code.

The letters in the consecutive pairs of the given word interchange their respective positions to define its code.

Each letter in the given word has moved four steps ahead in the alphabetic order to define its code.

Letters change their position as:
1^st becomes 3^rd
2^nd becomes 4^th
3^rd becomes 2^nd
4^th becomes 1^st

The same letters are written in reverse order starting from the last letter.

Alternate letters are skipped in the backward and forward duration between the corresponding letters of group of letters and its code.

Alternate letters are replaced between the corresponding letters of the group of word and its code.

2, 3, 4, 5 letters are skipped between the corresponding letters of the group of word and its code.

Group of three letters are coded according to the following rule. The first letter is taken to the end of the group.

First, third and fifth letters are replaced by next letters in the alphabet, while fourth, sixth are written by omitting a letter.

Letters in the second, fourth, sixth position are replaced by letters following the alphabet and then the letters are written in the reverse order.

c is 3^rd from beginning and x is 3^rd from and o is 15^th from beginning and L is 15^th from end. M is 13^th from beginning and N is 3^rd from end E is 5^th from beginning and V is 5^th from end. In the same fashion, ABLE = ZROU and MOLLY = NLOOB

The second and third letters and the fifth and sixth letters change places to make the code.

SCRIPT – TCQIQT
T is next to s, c – c
Q comes before R, I – I
Q is next to P in English alphabet, T –T
DIGEST
E is next to D, I – I
F comes before G, E – E
T is next to S, T – T
DIGEST – EIFETT

In the given code first letter is placed at 5^th position, 2^nd at 3^rd, 4^th at 1^st, and 5^th at 2^nd
→ DIRAGENT