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Question

In a certain code language, NOIDA is coded as STNIF. What will be the code for MEERUT?

The correct answer is

RJJWZY

Decoding the Pattern: NOIDA to STNIF

Let's analyze the given coding pattern where NOIDA is coded as STNIF. To find the code for MEERUT, we first need to understand the rule applied to convert NOIDA to STNIF.

Analyzing the Letter Shift

We can look at the position of each letter in the English alphabet and see how it changes from the original word NOIDA to the coded word STNIF.

  • N is the 14th letter. S is the 19th letter. The shift is $19 - 14 = +5$.
  • O is the 15th letter. T is the 20th letter. The shift is $20 - 15 = +5$.
  • I is the 9th letter. N is the 14th letter. The shift is $14 - 9 = +5$.
  • D is the 4th letter. I is the 9th letter. The shift is $9 - 4 = +5$.
  • A is the 1st letter. F is the 6th letter. The shift is $6 - 1 = +5$.

The pattern is consistent: each letter in the word NOIDA is shifted 5 positions forward in the alphabet to get the corresponding letter in the code STNIF.

Applying the Pattern to MEERUT

Now, we apply the same +5 shift rule to each letter of the word MEERUT.

  • M is the 13th letter. Shifting $+5$, we get the $(13+5) = 18$th letter, which is R.
  • E is the 5th letter. Shifting $+5$, we get the $(5+5) = 10$th letter, which is J.
  • E is the 5th letter. Shifting $+5$, we get the $(5+5) = 10$th letter, which is J.
  • R is the 18th letter. Shifting $+5$, we get the $(18+5) = 23$rd letter, which is W.
  • U is the 21st letter. Shifting $+5$, we get the $(21+5) = 26$th letter, which is Z.
  • T is the 20th letter. Shifting $+5$, we get the $(20+5) = 25$th letter, which is Y.

Resulting Code for MEERUT

By applying the +5 shift to each letter of MEERUT, we get the code RJJWZY.

Original Letter Alphabet Position Shift (+5) New Position Coded Letter
M 13 +5 18 R
E 5 +5 10 J
E 5 +5 10 J
R 18 +5 23 W
U 21 +5 26 Z
T 20 +5 25 Y

Therefore, the code for MEERUT is RJJWZY.

Revision Table: Coding-Decoding Concepts

Concept Description Example Type
Letter Coding Letters are replaced by other letters based on a specific rule. Shift in alphabet position, swapping letters, opposite letters.
Number Coding Words/Letters are replaced by numbers. Alphabetical position, sum of positions, specific numerical values.
Symbol Coding Letters/Words are replaced by symbols. Direct symbol substitution, rule-based symbol assignment.

Additional Information: Types of Letter Coding

Letter coding often involves various patterns. Some common types include:

  • Shift/Positional Coding: Letters are shifted a fixed number of positions forward or backward in the alphabet (like the +5 shift seen here).
  • Opposite Letter Coding: Each letter is replaced by its opposite letter in the alphabet (e.g., A with Z, B with Y).
  • Jumbled Coding: Letters within a word are rearranged according to a specific rule.
  • Direct Letter Coding: Letters of a word are directly assigned to specific letters or symbols, often given in a sample word.

Understanding these common types helps in quickly identifying the pattern in coding-decoding problems.

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Important Questions from Coding and Decoding By Letter Shifting

  1. In a certain code language, BEAT is written as YVZG. What will be the code of MILD?
  2. If BE QUICK is coded as ZC OSGAI, then the code of the last letter of the third word in the sentence I LOVE MY COUNTRY is
  3. In a certain code language, THANKS is written as SKNTHA. How is STUPID written in that code language?
  4. In a certain code, GARNISH is written as RGAINHS. How will GENIOUS be written in that code?

  5. If RUSTY is coded as PSQRW, then what is the code for FLARE?

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