Understanding the Coding Decoding Pattern

This question asks us to decipher a specific code used to transform a word and then apply that same code to a new word. We are given that the word UNHAPPY is coded as PPYAHNU. Our goal is to find the code for the word FALLACY using the same rule.

Analyzing the Given Example: UNHAPPY → PPYAHNU

Let's look at the word UNHAPPY and its coded form PPYAHNU. Both words have 7 letters.

Original word: UNHAPPY

Coded word: PPYAHNU

To find the pattern, let's examine the positions of the letters in the original word and see where they appear in the coded word. We can number the positions of the letters from 1 to 7 for both words.

Now let's see which letter from the original position moves to which coded position:

• The letter at original position 1 (U) is at coded position 7 (U).
• The letter at original position 2 (N) is at coded position 6 (N).
• The letter at original position 3 (H) is at coded position 5 (H).
• The letter at original position 4 (A) is at coded position 4 (A).
• The letter at original position 5 (P) is at coded position 1 (P).
• The letter at original position 6 (P) is at coded position 2 (P).
• The letter at original position 7 (Y) is at coded position 3 (Y).

So, the coded word is formed by taking the letters from the original word in a specific order of their original positions.

The order of original positions used to form the coded word is: 5th, 6th, 7th, 4th, 3rd, 2nd, 1st.

Let's verify this rule with UNHAPPY:

• Original 5th letter: P
• Original 6th letter: P
• Original 7th letter: Y
• Original 4th letter: A
• Original 3rd letter: H
• Original 2nd letter: N
• Original 1st letter: U

Putting these letters together in this order gives PPYAHNU, which matches the given coded word. The rule is correct.

Applying the Code Pattern to FALLACY

Now we apply the same rule to the word FALLACY. FALLACY also has 7 letters.

Using the rule (take letters from original positions 5, 6, 7, 4, 3, 2, 1):

• Letter at original position 5: A
• Letter at original position 6: C
• Letter at original position 7: Y
• Letter at original position 4: L
• Letter at original position 3: L
• Letter at original position 2: A
• Letter at original position 1: F

Arranging these letters in order gives: ACYLLAF.

So, the word FALLACY is coded as ACYLLAF.

Comparing with Options

Let's check the given options:

1. ACYLAAF
2. ACYLLAF
3. YCALLAF
4. ACYLALF

Our derived coded word, ACYLLAF, matches Option 2.

Conclusion

The code transforms a 7-letter word by rearranging its letters. The letters from original positions 5, 6, 7, 4, 3, 2, 1 form the coded word in that sequence. Applying this pattern to FALLACY results in ACYLLAF.

Revision Table: Coding Logic

Additional Information: Types of Coding Decoding

Coding and decoding questions are common in competitive exams and test your logical reasoning and pattern recognition skills. There are various types of letter coding patterns, including:

• Letter Shifting: Letters are shifted a certain number of places forward or backward in the alphabet.
• Direct Letter Coding: Each letter in the original word is replaced by a specific letter or symbol.
• Position Based Coding: The letters in the original word are rearranged based on a specific pattern related to their positions. This question is an example of position-based coding.
• Mixed Letter and Number Coding: Letters might be coded using numbers based on their alphabetical position or other rules.

Analyzing the positions of letters and looking for rearrangement patterns is key to solving position-based coding problems like this one.