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577 = 11111 Puzzle

This 577 = 11111 Puzzle asks you to arrange the numbers 5, 7, and 7 to make a shape. Then, you are tasked to make an identical shape using the numbers 1, 1, 1, 1, and 1.

577 = 11111 Puzzle

This creative puzzle was created by Erich Friedman and shared in Puzzle Box, Volume 1.

577 = 11111 Puzzle

Have you noticed my typo in the instructions? I didn’t realize it until I started writing this post. Don’t worry. I have fixed it in the downloadable file below.

577 = 11111 Puzzle

This puzzle turned out to not be quite as tricky as the Ducks and Snakes puzzle by Erich Friedman.

Puzzle Solutions

I intentionally do not share solutions to the puzzles I feature on my website because I strive to provide learning experiences for my students that are not google-able. I would like other teachers to be able to use these puzzles in their classrooms as well without the solutions being easily found on the Internet.

However, I do recognize that us teachers are busy people and sometimes need to quickly reference an answer key to see if a student has solved a puzzle correctly or to see if they have interpreted the instructions properly.

If you are a teacher who is using these puzzles in your classroom, please send me an email at with information about what you teach and where you teach. I will be happy to forward an answer key to you.

Christy Herring

Friday 11th of March 2022

Do you post the solutions? We are stumped on some!