Jawahar Navodaya Vidyalaya Selection Test (JNVST)
Your gateway to quality education at Jawahar Navodaya Vidyalaya
Coding-Decoding: Deciphering patterns in coded messages
🚀 Coding-Decoding is a fascinating topic that involves understanding and deciphering patterns in coded messages. Imagine you and your friend want to send secret messages to each other. Instead of writing the message directly, you use a code that only both of you understand. This is what coding-decoding is all about! In the context of the JNVST, you will learn how to identify patterns and decode messages using simple rules.
Examples💡
Example 1: Suppose the word 'APPLE' is coded as 'BQPMF'. To decode it, notice that each letter is shifted by one position forward in the alphabet. So, 'A' becomes 'B', 'P' becomes 'Q', and so on. To decode 'BQPMF', shift each letter back by one position to get 'APPLE'.
Example 2: If 'CAT' is coded as 'DBU', then to decode 'DBU', shift each letter back by one position in the alphabet. 'D' becomes 'C', 'B' becomes 'A', and 'U' becomes 'T'. Thus, 'DBU' decodes to 'CAT'.
Example 3: In a number code, if '123' is coded as '234', then to decode '234', subtract 1 from each digit to get '123'.
Common Mistakes to Avoid⚠️
- Mistake 1: Forgetting to apply the same rule to all letters or numbers in the code. Always ensure consistency in the pattern.
- Mistake 2: Confusing the direction of the shift. Remember whether you need to shift forward or backward.
- Mistake 3: Overcomplicating the pattern. Sometimes the pattern is simple, like a direct shift, so don't overthink it.