What is the primary purpose of coding and decoding in reasoning ?

The primary purpose is to verify a candidate's ability to recognize patterns and apply logical rules to transform information from one form to another, aiding in understanding language and symbols.

What is a common method for creating codes using letter positions?

A common method is to assign each letter a numerical value based on its position in the alphabet (A=1, B=2, C=3, ..., Z=26) and then apply a transformation rule.

How would you encode the word 'BAT' using a shift of 2?

'BAT' would be encoded as 'EDW', where B becomes E, A becomes D, and T becomes W.

Decode the sequence '19 15 21 14 4' where 1=A, 2=B, etc.

'19 15 21 14 4' decodes to 'SOUND'.

What is the reverse coding method for the alphabet (Z=1, Y=2, ...)?

In reverse coding, each letter's value is determined by subtracting its position from 27 (A=26, B=25, ..., Z=1).

If 'E' is coded as 'H', what is the shift used?

'E' is shifted forward by 2 positions to become 'H'.

How would you decode 'UQF' if each letter is shifted back by 2?

'UQF' decoded back by 2 positions becomes 'RNC'.

In the code where 'A=1, B=2', what does '14 1 13 5' decode to?

'14 1 13 5' decodes to 'NAME'.

If 'HELLO' is coded as 'KHOOR', what is the shift used?

'HELLO' is encoded by shifting each letter forward by 2 positions.

How would 'XYZ' be encoded if each letter is replaced by the letter 1 position ahead?

'XYZ' would be encoded as 'YZA'.

What is the decoding of 'RAC' if each letter is shifted back by 1?

'RAC' becomes 'QZB' when each letter is shifted back by 1 position.

In a pattern where 'F' is coded as 'I', what is the decoding for 'I'?

'I' would be decoded as 'F', since each letter is shifted back by 3 positions.

How would you encode 'CAT' using a reverse alphabet code (Z=1)?

'CAT' would be encoded as 'GZV'. (C=24, A=26, T=7)

What is a useful strategy for solving complex coding-decoding problems?

Look for consistent patterns in letter shifts or numerical substitutions and apply them systematically across the entire code.