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Number-Letter Codes - Intermediate Level: product codes INTERMEDIATE

Exam-focused quick response training ★ worksheet: 20 intermediate-level number-letter codes questions. Worksheet 13 of 30 targets product codes. Build proficiency in numeric equivalents, alphabet numbering, code conversion with detailed solutions. Ideal for mid-level competitive exam preparation.

📝 Worksheet 13 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Number-Letter Codes
Worksheet 13 of 30 (43% complete)

Question 1

If A=26, B=25, C=24... Z=1 (reverse order), then 'ANT' is coded as?
Reverse coding: A=26 + N=13 + T=7 → concatenated = 26137
reverse, sequence

Question 2

If A=1, B=2, C=3... Z=26, then 'BAD' is coded as?
Letter to number: B=2 + A=1 + D=4 → concatenated = 214
basic, sequence

Question 3

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

Question 4

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 5

For 'DEF', odd positions (1st,3rd,5th...) are coded as their position numbers, even positions are shifted by 1 letter forward. What is the code?
Odd/Even coding: Pos1:D→4, Pos2:E→E, Pos3:F→6 → 4E6
position, pattern, mixed

Question 6

If each letter is coded as its ASCII value (A=65, B=66...), what is 'BED' coded as?
ASCII coding: B=66, E=69, D=68 → concatenated = 666968
ascii, computer

Question 7

If letters are coded as 5-bit binary (A=1=00001, B=2=00010...), 'CAT' is coded as?
Binary coding: C=3=00011, A=1=00001, T=20=10100 → concatenated = 000110000110100
binary, advanced

Question 8

If A=1, B=2, C=3... Z=26, then 'DOG' is coded as?
Letter to number: D=4 + O=15 + G=7 → concatenated = 4157
basic, sequence

Question 9

If each letter is shifted forward by 2 positions (A→C), what is 'CAR' coded as?
Shift coding: C→E(+2), A→C(+2), R→T(+2) → ECT
shift, caesar, cipher

Question 10

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 11

If A=2, B=3, C=5, D=7, E=11... (prime numbers in order), what is 'DOG' coded as?
Prime coding: D→7, O→47, G→17 → concatenated = 74717
prime, numbers, advanced

Question 12

If each letter is coded as its ASCII value (A=65, B=66...), what is 'BED' coded as?
ASCII coding: B=66, E=69, D=68 → concatenated = 666968
ascii, computer

Question 13

If A=26, B=25, C=24... Z=1 (reverse order), then 'ANT' is coded as?
Reverse coding: A=26 + N=13 + T=7 → concatenated = 26137
reverse, sequence

Question 14

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 15

If letters are coded as 5-bit binary (A=1=00001, B=2=00010...), 'BED' is coded as?
Binary coding: B=2=00010, E=5=00101, D=4=00100 → concatenated = 000100010100100
binary, advanced

Question 16

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 'EGG' coded as?
Digit sum coding: E=5→digit_sum=5, G=7→digit_sum=7, G=7→digit_sum=7 → concatenated = 577
digits, sum, pattern

Question 17

For 'YZ', odd positions (1st,3rd,5th...) are coded as their position numbers, even positions are shifted by 1 letter forward. What is the code?
Odd/Even coding: Pos1:Y→25, Pos2:Z→@ → 25@
position, pattern, mixed

Question 18

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 19

If a word's code is the product of its letter positions, what is 'FISH's code?
Product calculation: F=6 × I=9 × S=19 × H=8 = 8208
product, arithmetic

Question 20

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
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