You may also like

problem icon

The Best Card Trick?

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?

problem icon

Substitution Cipher

Find the frequency distribution for ordinary English, and use it to help you crack the code.

problem icon

Secret Transmissions

How can Agent X transmit data on a faulty line and be sure that her message will get through?

Substitution Transposed

Stage: 3 and 4 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

 

456 has 14 factors.


The two methods used to encrypt the message are commutable, so it doesn't matter which method you decipher first.