Time for a little mathemagic! Choose any five cards from a pack and show four of them to your partner. How can they work out the fifth?
Find the frequency distribution for ordinary English, and use it to help you crack the code.
Here is the start of a six-part challenge. Can you get to the end and crack the final message?
We love to see solutions you send in to our live problems. We review and edit these for the benefit of other students. Check the Past Features links for published solutions to recently featured problems. The best solutions are likely to be featured in the Trending column.
If you would like us to consider including your solution please submit it while the problem is Live.
We have written an article on what we are looking for when we decide which solutions to publish.
Send your best solutions for Secret Transmissions; Explain your methods clearly for other school students to read. Give reasons and convincing arguments or proofs where you can.
You can now upload a file with your solutions eg. a picture,word document or spreadsheet, this file must be less than 2MBYour name, age and school are optional
Name: Age: Not entered Over 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 School:
Country:
Browse and upload a file with this solution: