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UPSC Prelims 2024CSATLogical ReasoningCoding-Decoding

Q78. If in a certain code, ‘POT’ is written as ATOP and ‘TRAP’ is written as APART, then how is ‘ARENA’ written in that code?

A. AARENA
B. AANREA
C. AANEAR
D. AANERA✓ Correct

Detailed Solution

✓ Correct Answer: Option D

Let's analyze the given coding pattern: 1. **POT is written as ATOP**: - Original letters: P, O, T - Coded letters: A, T, O, P - It appears an 'A' is added at the beginning.

The remaining letters (T, O, P) are the original letters (P, O, T) arranged in reverse order. So, the pattern is: Add 'A' at the beginning, then write the original word's letters in reverse order.

2. **TRAP is written as APART**: - Original letters: T, R, A, P - Coded letters: A, P, A, R, T - Following the deduced pattern: Add 'A' at the beginning. Then write the original letters (T, R, A, P) in reverse order: P, A, R, T.

- Combining these: A + P A R T = APART. This matches the given code. The pattern is consistent: Add an 'A' at the beginning of the word, then append the letters of the original word in reverse order.

Now, apply this rule to **ARENA**: 1. Add 'A' at the beginning: A 2. Original letters of ARENA (A, R, E, N, A) in reverse order: A, N, E, R, A. 3. Combine these: A + A N E R A = AANERA.

Therefore, 'ARENA' is written as AANERA. This question tests pattern recognition and coding-decoding skills.

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