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Grade 11 Computing Challenge Puzzles Worksheet with Answers
Grade 11 (US) · Year 12 (UK) · Class 11 (India) · Computer Science
Unit 5: Going FurtherChallenge PuzzlesChallenge
Puzzles that stretch computational thinking: bit patterns, logic and clever counting. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comComputing Challenge Puzzles
Grade 11 · Computer Science
Name
Class
Date
Learning goal: Challenge Puzzles
Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.
RememberBinary place values
- 1
What is the largest whole number you can store in 7 bits?
- 2
What is the largest whole number you can store in 8 bits?
- 3
How many different patterns can 5 bits make?
- 4
5 computers each connect directly to every other computer with one cable. How many cables are needed?
- 5
In a list of every 4-bit pattern, how many patterns have exactly one 1?
- 6
What is the largest whole number you can store in 6 bits?
- 7
6 computers each connect directly to every other computer with one cable. How many cables are needed?
- 8
4 computers each connect directly to every other computer with one cable. How many cables are needed?
- 9
A playlist app lets you switch each of 3 songs on or off. How many different playlists (including the empty one) are possible?
- 10
What is the largest whole number you can store in 10 bits?
- 11
A playlist app lets you switch each of 5 songs on or off. How many different playlists (including the empty one) are possible?
- 12
In a list of every 3-bit pattern, how many patterns have exactly one 1?
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Free printable worksheets with answer keys · aethelsystems.com/worksheets/computer/11/challenge_cs
Answer key — Computing Challenge Puzzles (Grade 11)
- 1.127
- 2.255
- 3.32
- 4.10
- 5.4
- 6.63
- 7.15
- 8.6
- 9.8
- 10.1023
- 11.32
- 12.3
Answer key (click to show)
- 1.127
- 2.255
- 3.32
- 4.10
- 5.4
- 6.63
- 7.15
- 8.6
- 9.8
- 10.1023
- 11.32
- 12.3
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