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Number-Letter Codes - Beginner Level: positional codes BEGINNER

Exam-focused quick revision round worksheet: 20 beginner-level number-letter codes questions. Worksheet 3 of 30 targets positional codes. Build proficiency in positional codes, ASCII patterns, letter value codes with detailed solutions. Ideal for entry-level competitive exam preparation.

📝 Worksheet 3 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner level

What you'll learn in this worksheet:
Your progress through Number-Letter Codes
Worksheet 3 of 30 (10% complete)

Question 1

If A=1, B=1, C=2, D=3, E=5, F=8... (Fibonacci sequence), what is 'FISH' coded as?
Fibonacci coding: F=8, I=34, S=4181, H=21 → concatenated = 834418121
fibonacci, sequence, advanced

Question 2

If letters are coded as (position mod 8), 'CODING' becomes?
Modular coding: C=3%8=3, O=15%8=7, D=4%8=4, I=9%8=1, N=14%8=6, G=7%8=7 → concatenated = 374167
modular, advanced

Question 3

If each letter is coded as the square of its position (A=1→1, B=2→4, C=3→9...), what is 'CAT' coded as?
Square coding: C=3²=9, A=1²=1, T=20²=400 → concatenated = 91400
square, exponential, advanced

Question 4

If each letter is shifted forward by 2 positions (A→C), what is 'PEN' coded as?
Shift coding: P→R(+2), E→G(+2), N→P(+2) → RGP
shift, caesar, cipher

Question 5

For 'CEG', find the differences between consecutive letter positions (A=1,B=2...). Format as comma-separated values.
Positions: [3, 5, 7] → Differences: [2, 2]
difference, sequence, pattern

Question 6

If A=1, B=1, C=2, D=3, E=5, F=8... (Fibonacci sequence), what is 'DOG' coded as?
Fibonacci coding: D=3, O=610, G=13 → concatenated = 361013
fibonacci, sequence, advanced

Question 7

If vowels (A,E,I,O,U) are coded as 'V' and consonants as 'C', what is the code for 'CAT'?
Vowel/Consonant coding: C→C, A→V, T→C → CVC
vowel, consonant, pattern

Question 8

If each letter is shifted forward by 1 positions (A→B), what is 'CAR' coded as?
Shift coding: C→D(+1), A→B(+1), R→S(+1) → DBS
shift, caesar, cipher

Question 9

If a word's code is the product of its letter positions, what is 'DOG's code?
Product calculation: D=4 × O=15 × G=7 = 420
product, arithmetic

Question 10

If each letter is shifted forward by 4 positions (A→E), what is 'BED' coded as?
Shift coding: B→F(+4), E→I(+4), D→H(+4) → FIH
shift, caesar, cipher

Question 11

If A=26, B=25, C=24... Z=1 (reverse order), then 'CAB' is coded as?
Reverse coding: C=24 + A=26 + B=25 → concatenated = 242625
reverse, sequence

Question 12

For 'ABC', find the differences between consecutive letter positions (A=1,B=2...). Format as comma-separated values.
Positions: [1, 2, 3] → Differences: [1, 1]
difference, sequence, pattern

Question 13

If each letter is shifted forward by 1 positions (A→B), what is 'DOG' coded as?
Shift coding: D→E(+1), O→P(+1), G→H(+1) → EPH
shift, caesar, cipher

Question 14

If vowels (A,E,I,O,U) are coded as 'V' and consonants as 'C', what is the code for 'TIGER'?
Vowel/Consonant coding: T→C, I→V, G→C, E→V, R→C → CVCVC
vowel, consonant, pattern

Question 15

If letters are coded as 5-bit binary (A=1=00001, B=2=00010...), 'BIRD' is coded as?
Binary coding: B=2=00010, I=9=01001, R=18=10010, D=4=00100 → concatenated = 00010010011001000100
binary, advanced

Question 16

If A=1, B=2, C=3... Z=26, then 'EGG' is coded as?
Letter to number: E=5 + G=7 + G=7 → concatenated = 577
basic, sequence

Question 17

If each letter is coded as the square of its position (A=1→1, B=2→4, C=3→9...), what is 'EGG' coded as?
Square coding: E=5²=25, G=7²=49, G=7²=49 → concatenated = 254949
square, exponential, advanced

Question 18

If A=1, B=1, C=2, D=3, E=5, F=8... (Fibonacci sequence), what is 'ABC' coded as?
Fibonacci coding: A=1, B=1, C=2 → concatenated = 112
fibonacci, sequence, advanced

Question 19

If each letter is coded as the square of its position (A=1→1, B=2→4, C=3→9...), what is 'EGG' coded as?
Square coding: E=5²=25, G=7²=49, G=7²=49 → concatenated = 254949
square, exponential, advanced

Question 20

If A=2, B=3, C=5, D=7, E=11... (prime numbers in order), what is 'CAT' coded as?
Prime coding: C→5, A→2, T→71 → concatenated = 5271
prime, numbers, advanced
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