Reasoning Aptitude
CODING AND DECODING MCQs
Coding-Decoding
 - The code formation can be shown as under: Word: MUNI CIPA LITY Code: INMU APCI YTLI
 - The word is divided into groups of three letters each and then the letters in each group are written in a reverse order to obtain code
 - The first, third and fifth letters of the word are respectively moved three, four, and five steps forward, while the letters at even positions are each moved two steps forward, to obtain the corresponding letter of the code
 - First and the first six letters and then the last six letters are written in a reverse order to obtain the code
- The first and sixth, third and eighth, fifth and tenth letters of the word interchange place in the code
The given code rearranges the letters in the word ADVENTURES in a peculiar way. The first three letters are moved to the end, and the rest are reversed. Using this rule, we can determine the code for the given word SURPRISING.
Step 1: Reverse the letters in the word SURPRISING.
SURPRISING -> GNISIRPRUS
Step 2: Take the first three letters of the reversed word and move them to the end.
GNISIRPRUS -> ISIRPRUSGN
Step 3: Compare the code for ADVENTURES with the obtained code to identify the corresponding letters in the coded word.
A -> T
D -> D
V -> R
E -> E
N -> S
T -> A
U -> U
R -> V
S -> N
Step 4: Write the final code for the word SURPRISING by replacing each letter with its corresponding letter in the coded word.
ISIRPRUSGN -> IUIPGSSRNR
Therefore, the correct answer is Option C - IUIPGSSRNR.
Definitions:
- Code: A system of symbols, letters, or words used to represent something, especially for the purposes of secrecy or brevity.
- Reverse: To change the direction or orientation of something to its opposite.
Formulae:
- Reversing a word involves writing it backward.
- Rearranging the letters in a word involves changing their order.
Key points:
- The given code rearranges the letters in a word in a specific way.
- To find the code for a word, we need to reverse the letters, move the first three letters to the end, and then compare the obtained code with the code for a known word.
- The correct answer is obtained by replacing each letter in the obtained code with its corresponding letter in the coded word.
 - In the code, first three letters are reversed then next two letters then again next two letters and finally the last three letters are reversed in orders
 - In the code, the first three letters are kept as it is, the fourth letter is made fifth, fifth letter is made sixth, and sixth letter is made fourth, then the last two letters are interchanged
 - The letters of the word are written in a reverse order and then the letter of the second and fourth pairs from the end of the word so formed are reversed in order, to obtain the code. Thus the code for POPULARISE is ESRIALPUOP
- If in the word, a letter is nth letter from the beginning of the English alphabets, then in the code the corresponding letter is the (n+1) th letter from the end of the alphabets
The given code DIAMOND is coded as VQYMKLV. To solve this coding problem, we need to understand the pattern used to convert the given word into its coded form.
Solution:
Let's analyze the given code for the word DIAMOND:
D I A M O N D
V Q Y M K L V
We can see that each letter of the original word is replaced by a corresponding letter in the coded word. The replacement pattern used here is as follows:
- The first letter of the original word is replaced by the 22nd letter of the alphabet (V)
- The second letter of the original word is replaced by the 17th letter of the alphabet (Q)
- The third letter of the original word is replaced by the 25th letter of the alphabet (Y)
- The fourth letter of the original word is replaced by the 13th letter of the alphabet (M)
- The fifth letter of the original word is replaced by the 11th letter of the alphabet (K)
- The sixth letter of the original word is replaced by the 12th letter of the alphabet (L)
- The seventh letter of the original word is replaced by the 22nd letter of the alphabet (V)
Using the same pattern, we can now encode the word FEMALE:
F E M A L E
T U M Y N U
Therefore, the coded form of FEMALE is TUMYNU. Hence, the answer is option A.
To summarize, in this problem, we need to understand the pattern used to convert the given word into its coded form. In general, such problems can be solved by identifying the replacement pattern used and applying it to the new word. In this case, we saw that each letter of the original word is replaced by a corresponding letter in the coded word according to their alphabetical position.
 - Clearly, the given code is obtained by moving each letter of the word WELCOME three steps forward