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Number-Letter Codes - Intermediate Level: positional codes INTERMEDIATE

Comprehensive weakness targeting worksheet covering 20 intermediate-level number-letter codes problems. Worksheet 18 of 30 emphasizes positional codes. Master ASCII patterns, letter value codes, numeric equivalents through detailed explanations. Difficulty: moderate complexity with mixed patterns. Tailored for mid-level preparation.

📝 Worksheet 18 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Number-Letter Codes
Worksheet 18 of 30 (60% complete)

Question 1

If A=1, B=1, C=2, D=3, E=5, F=8... (Fibonacci sequence), what is 'BED' coded as?
Fibonacci coding: B=1, E=5, D=3 → concatenated = 153
fibonacci, sequence, advanced

Question 2

If A=2, B=3, C=5, D=7, E=11... (prime numbers in order), what is 'BIRD' coded as?
Prime coding: B→3, I→23, R→61, D→7 → concatenated = 323617
prime, numbers, advanced

Question 3

If A=1, B=1, C=2, D=3, E=5, F=8... (Fibonacci sequence), what is 'BIRD' coded as?
Fibonacci coding: B=1, I=34, R=2584, D=3 → concatenated = 13425843
fibonacci, sequence, advanced

Question 4

If each letter is coded as the square of its position (A=1→1, B=2→4, C=3→9...), what is 'BED' coded as?
Square coding: B=2²=4, E=5²=25, D=4²=16 → concatenated = 42516
square, exponential, advanced

Question 5

If letters are coded as 5-bit binary (A=1=00001, B=2=00010...), 'DOG' is coded as?
Binary coding: D=4=00100, O=15=01111, G=7=00111 → concatenated = 001000111100111
binary, advanced

Question 6

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 7

If vowels (A,E,I,O,U) are coded as 'V' and consonants as 'C', what is the code for 'DOG'?
Vowel/Consonant coding: D→C, O→V, G→C → CVC
vowel, consonant, pattern

Question 8

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 9

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 10

If a word's code is the sum of its letter positions (A=1,B=2...), what is 'LION's code?
Sum calculation: L=12 + I=9 + O=15 + N=14 = 50
sum, arithmetic

Question 11

If letters are coded as 5-bit binary (A=1=00001, B=2=00010...), 'FROG' is coded as?
Binary coding: F=6=00110, R=18=10010, O=15=01111, G=7=00111 → concatenated = 00110100100111100111
binary, advanced

Question 12

If A=2, B=3, C=5, D=7, E=11... (prime numbers in order), what is 'BIRD' coded as?
Prime coding: B→3, I→23, R→61, D→7 → concatenated = 323617
prime, numbers, advanced

Question 13

If each letter is coded as the square of its position (A=1→1, B=2→4, C=3→9...), what is 'ACE' coded as?
Square coding: A=1²=1, C=3²=9, E=5²=25 → concatenated = 1925
square, exponential, advanced

Question 14

If letters are coded as (position mod 5), 'LETTER' becomes?
Modular coding: L=12%5=2, E=5%5=0, T=20%5=0, T=20%5=0, E=5%5=0, R=18%5=3 → concatenated = 200003
modular, advanced

Question 15

If each letter is coded as the sum of digits of its position (A=1→1, B=2→2, ..., J=10→1+0=1...), what is 'BAD' coded as?
Digit sum coding: B=2→digit_sum=2, A=1→digit_sum=1, D=4→digit_sum=4 → concatenated = 214
digits, sum, pattern

Question 16

If letters are coded as 5-bit binary (A=1=00001, B=2=00010...), 'FROG' is coded as?
Binary coding: F=6=00110, R=18=10010, O=15=01111, G=7=00111 → concatenated = 00110100100111100111
binary, advanced

Question 17

If a word's code is the product of its letter positions, what is 'ACE's code?
Product calculation: A=1 Ă— C=3 Ă— E=5 = 15
product, arithmetic

Question 18

If letters are coded as 5-bit binary (A=1=00001, B=2=00010...), 'FROG' is coded as?
Binary coding: F=6=00110, R=18=10010, O=15=01111, G=7=00111 → concatenated = 00110100100111100111
binary, advanced

Question 19

If each letter is coded as the sum of digits of its position (A=1→1, B=2→2, ..., J=10→1+0=1...), what is 'CAT' coded as?
Digit sum coding: C=3→digit_sum=3, A=1→digit_sum=1, T=20→digit_sum=2 → concatenated = 312
digits, sum, pattern

Question 20

If a word's code is the sum of its letter positions (A=1,B=2...), what is 'LION's code?
Sum calculation: L=12 + I=9 + O=15 + N=14 = 50
sum, arithmetic
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