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Coding-Decoding - Intermediate Level: operation coding INTERMEDIATE

Level up your coding-decoding skills with this comprehensive review. 20 intermediate-level problems await in Worksheet 14 of 30. Focus area: operation coding. Learn encoding rules, decoding techniques, mixed coding through systematic practice. Designed for mid-level learners seeking moderate complexity with mixed patterns.

📝 Worksheet 14 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Coding-Decoding
Worksheet 14 of 30 (46% complete)

Question 1

If 'LIP' is coded as 'NKR', then how is 'PEN' coded?
The pattern is shifting each letter by +2. So PEN becomes: P(16→18) → E(5→7) → N(14→16) = RGP
shift, basic

Question 2

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

Question 3

If 'KEY' = 41 and 'CUP' = 40, then 'LIP' = ?
Sum of letter positions: KEY = 11+5+25 = 41, CUP = 3+21+16 = 40, LIP = 12+9+16 = 37
position, sum

Question 4

If 'ENCRYPT' is coded as 'OPIBWVH' using the rule 'multiply each letter's position by 3' (A=1, B=2, ..., Z=26, wrap around), then how is 'PLANT' coded?
Each letter position ×3: ENCRYPT → OPIBWVH
arithmetic, operations

Question 5

If 'BOX' = 41 and 'PEN' = 35, then 'FAN' = ?
Sum of letter positions: BOX = 2+15+24 = 41, PEN = 16+5+14 = 35, FAN = 6+1+14 = 21
position, sum

Question 6

If 'MAP' = 30 and 'DOG' = 26, then 'SUN' = ?
Sum of letter positions: MAP = 13+1+16 = 30, DOG = 4+15+7 = 26, SUN = 19+21+14 = 54
position, sum

Question 7

If 'LIGHT' is coded as 'THGIL', then how is 'DOOR' coded?
The pattern is reverse coding: LIGHT → THGIL, so DOOR → ROOD
reverse, pattern

Question 8

In a certain code, each vowel is replaced by the next letter (A→B, E→F, I→J, O→P, U→V). How is 'JAVA' coded?
Vowels shifted forward: JAVA → JBVB
conditional, vowels

Question 9

If 'FLY' is coded as 'IOB' using the rule 'add 3 to each letter's position' (A=1, B=2, ..., Z=26, wrap around), then how is 'CUBE' coded?
Each letter position +3: FLY → IOB
arithmetic, operations

Question 10

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

Question 11

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

Question 12

If 'BUS' is coded as 'CVT', then how is 'BOX' coded?
The pattern is shifting each letter by +1. So BOX becomes: B(2→3) → O(15→16) → X(24→25) = CPY
shift, basic

Question 13

If the code for 'CAR' is 'XZI' using the rule 'each letter replaced by its opposite (A↔Z, B↔Y)', then what is the original word for the code 'XZI'?
To decode, apply opposite again: XZI → CAR
decode, reverse

Question 14

If 'RAT' = 39 and 'CAT' = 24, then 'PEN' = ?
Sum of letter positions: RAT = 18+1+20 = 39, CAT = 3+1+20 = 24, PEN = 16+5+14 = 35
position, sum

Question 15

If 'RAT' = 39 and 'LIP' = 37, then 'KEY' = ?
Sum of letter positions: RAT = 18+1+20 = 39, LIP = 12+9+16 = 37, KEY = 11+5+25 = 41
position, sum

Question 16

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

Question 17

In a certain code, each consonant is replaced by the previous letter (B→A, C→B, etc.). How is 'RUBY' coded?
Consonants shifted backward: RUBY → QUAX
conditional, vowels

Question 18

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

Question 19

If 'LIP' is coded as 'OLS', then how is 'RAT' coded?
The pattern is shifting each letter by +3. So RAT becomes: R(18→21) → A(1→4) → T(20→23) = UDW
shift, basic

Question 20

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