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Coding-Decoding - Intermediate-Advanced Level: decoding techniques INTERMEDIATE-ADVANCED

Ready to master coding-decoding? This time-bound test features 20 intermediate-advanced-level challenges. Worksheet 22 of 30 sharpens your decoding techniques skills. Master letter coding, number coding, symbol substitution through guided practice. Perfect for advanced developing test preparation.

📝 Worksheet 22 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate-advanced level

What you'll learn in this worksheet:
Your progress through Coding-Decoding
Worksheet 22 of 30 (73% complete)

Question 1

If in a code, A↔Z, B↔Y, C↔X, etc. (each letter replaced by its opposite), then 'DISK' becomes 'WRHP'. How is 'MOUSE' coded?
Opposite of MOUSE: MOUSE → NLFHV
opposite, mirror

Question 2

If in a code, A↔Z, B↔Y, C↔X, etc. (each letter replaced by its opposite), then 'OMEGA' becomes 'LNVTZ'. How is 'ANSWER' coded?
Opposite of ANSWER: ANSWER → ZMHDVI
opposite, mirror

Question 3

If 'LIP' is coded as 'MJQ', then how is 'SUN' coded?
The pattern is shifting each letter by +1. So SUN becomes: S(19→20) → U(21→22) → N(14→15) = TVO
shift, basic

Question 4

If A=1, B=2, C=3... Z=26, then 'HELLO' is coded as?
Converting each letter to its position number: H=8, E=5, L=12, L=12, O=15 → 85121215
numbers, substitution

Question 5

If 'PENCIL' is coded as 'LICNEP', then how is 'WALL' coded?
The pattern is reverse coding: PENCIL → LICNEP, so WALL → LLAW
reverse, pattern

Question 6

If the code for 'REASON' is 'SFBTPO' using the rule 'each letter shifted forward by 1', then what is the original word for the code 'SFBTPO'?
To decode, shift each letter backward by 1: SFBTPO → REASON
decode, reverse

Question 7

If A=1, B=2, C=3... Z=26, then 'TEST' is coded as?
Converting each letter to its position number: T=20, E=5, S=19, T=20 → 2051920
numbers, substitution

Question 8

If 'NETWORK' is coded as 'LSPXUFO' using the rule 'reverse the word, then shift each letter by +1', what is the code?
Step 1: Reverse NETWORK → KROWTEN, Step 2: Shift +1 → LSPXUFO
mixed, complex

Question 9

If 'DECRYPT' is coded as 'VRATEGF' using the rule 'reverse the word, then shift each letter by +2', what is the code?
Step 1: Reverse DECRYPT → TPYRCED, Step 2: Shift +2 → VRATEGF
mixed, complex

Question 10

If 'DECODE' is coded as 'EFDPEF' using the rule 'add 1 to each letter's position' (A=1, B=2, ..., Z=26, wrap around), then how is 'MAT' coded?
Each letter position +1: DECODE → EFDPEF
arithmetic, operations

Question 11

If 'TEXT' is coded as 'QBUQ' using the rule 'subtract 3 from each letter's position' (A=1, B=2, ..., Z=26, wrap around), then how is 'OMEGA' coded?
Each letter position -3: TEXT → QBUQ
arithmetic, operations

Question 12

If A=1, B=2, C=3... Z=26, then 'BRAIN' is coded as?
Converting each letter to its position number: B=2, R=18, A=1, I=9, N=14 → 2181914
numbers, substitution

Question 13

If 'CUP' = 40 and 'KEY' = 41, then 'CAR' = ?
Sum of letter positions: CUP = 3+21+16 = 40, KEY = 11+5+25 = 41, CAR = 3+1+18 = 22
position, sum

Question 14

In a certain code, vowels are coded as A=1,E=2,I=3,O=4,U=5. How is 'BETA' coded?
Vowels: EA become numbers: B2T1
conditional, vowels

Question 15

If the code for 'SYSTEM' is 'VBVWHP' using the rule 'each letter shifted forward by 3', then what is the original word for the code 'VBVWHP'?
To decode, shift each letter backward by 3: VBVWHP → SYSTEM
decode, reverse

Question 16

In a certain code, vowels are coded as A=1,E=2,I=3,O=4,U=5. How is 'WATER' coded?
Vowels: AE become numbers: W1T2R
conditional, vowels

Question 17

In a certain code, vowels become next consonant, consonants become next vowel. How is 'LOGICAL' coded?
Swapping vowel/consonant roles: LOGICAL → OPIJEBO
conditional, vowels

Question 18

If 'SYSTEM' is coded as 'LXLNJZ' using the rule 'multiply each letter's position by 2' (A=1, B=2, ..., Z=26, wrap around), then how is 'PUZZLED' coded?
Each letter position ×2: SYSTEM → LXLNJZ
arithmetic, operations

Question 19

If 'HAT' is coded as 'JCV', then how is 'BAT' coded?
The pattern is shifting each letter by +2. So BAT becomes: B(2→4) → A(1→3) → T(20→22) = DCV
shift, basic

Question 20

If A=1, B=2, C=3... Z=26, then 'HELLO' is coded as?
Converting each letter to its position number: H=8, E=5, L=12, L=12, O=15 → 85121215
numbers, substitution
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