Symbol Coding
Comprehensive notes, formulas, and practice questions for Symbol Coding.
Symbol Coding
Symbol Coding
What is Symbol Coding
In symbol coding, each letter (or word) is replaced by a symbol — such as @, #, $, %, *, &, or a shape. The question gives you one or two coded words as examples so you can build a symbol-to-letter map. Once you have the map, you can encode a new word or decode a symbol string. Symbol coding tests careful pattern matching rather than arithmetic.
Step-by-Step Method
- List each coded example given in the question.
- Match letters to symbols one by one: if CAT = @#, then T=$ and A=# must be shared; comparing gives C=@ and B=%.
- Build a key table: Letter → Symbol.
- Use the key to decode the asked symbol string or encode the asked word.
- Double-check each symbol against your key — do not guess for symbols that were not given.
Worked Examples
Example 1: In a code, PEN = !@# and NET = #@. Decode !#.
- From PEN: P=!, E=@, N=#.
- From NET: N=#, E=@, T=*. (Consistent with PEN coding.)
- Decode !*#: ! = P, * = T, # = N.
- Answer: PTN.
Example 2: In a code, BOOK = %^^& and COOK = @^^&. What is the code for COOL?
- B=%, C=@, O=^, K=&.
- COOL: C=@, O=^, O=^, L=?
- L was not given — the question would provide it or ask only for decodable letters.
- If L=* is given elsewhere: COOL = @^^*.
Common Traps
- Assuming a symbol always maps to the same letter across different questions — each question has its own key.
- Getting confused when the same letter appears twice in a word (OO in BOOK = ^^, confirming O=^).
- Missing a symbol because it looks like punctuation — treat every character in the coded word as a symbol.
Quick Check
- In a code, SUN = #@% and NUT = %@. What does #@ decode to?
- Using the same code above, encode the word TUN.
Key Takeaways (TL;DR)
- What is Symbol Coding
- Step-by-Step Method
- Worked Examples
- Common Traps
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