You may also like

problem icon

Numbered Cars

I was looking at the number plate of a car parked outside. Using my special code S208VBJ adds to 65. Can you crack my code and use it to find out what both of these number plates add up to?

problem icon

Unlocking the Case

A case is found with a combination lock. There is one clue about the number needed to open the case. Can you find the number and open the case?

problem icon

James's Code Challenge

The Enigma Project's James Grime has created a video code challenge. Watch it here!

Some Secret Codes

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Alex from Mortimer St. Mary's School in England sent in a challenge for us at Nrich which turned out to be the word, antidisestablishmentarianism, once thought to be the longest English word. Can you see what the code was for this very long word?

The solutions of "pat a cake, the west wind blows, you are working hard" were sent in by many of you. Here are the ones that we received; Martin and Jonah from Goodleigh School; Christy, Charlie and Callum from St. Cecilia's Wandsworth; SJF Y6 Maths from G&T School; Zetta from Thomas's Battersea; Dan from Whitby Community School; Tallulah, Anna and Aishwarya from Salcombe Prep School; Kavi from St. James the Great; Kavya from Hymers College; Suchita from Elsley School; Tom and Henry from Redgate School and Toony $5/4S$ Toongabbie Public School Australia.

Sana and Freya from The British Manila in the Philippines wrote the following:

sdw - d - fdnh = pat a cake

wkh - zhvw - zlqg - eorzv = the west wind blows

brx - duh - zrunlqj - kdug = you are working hard
nrich is awesome = qulfk - lv - dzhvrph

world peace = zruog - shdfh

math is fun = pdwk - lv - ixq

Think of a word in the dictionary then take the one before it and spell
that word backwards e.g.

a = starter word

zoom-lens = word before a in dictionary

a = snel-mooz
(for word before starter word spelt backwards).

Year 5 from St. John's wrote:


1.PAT-A-CAKE
2.THE-WEST-WIND-BLOWS
3.YOU-ARE-WORKING-HARD

WE FOUND OUT NRICH'S QUESTIONS BY PRINTING THE CODE WHEEL OUT. WE USED IT TO FIGURE OUT THE ANSWERS. WE FOUND OUT ABOUT MORSE CODE AND MADE OUR OWN CODE.

.-- .  .- .-. .  ..- ... .. -. --.  -- --- .-. ... .  -.-. --- -.. .  ---
-.
-. .-. .. -.-. ....      

THAT EQUALS:
WE ARE USING MORSE CODE ON NRICH

 

Thank you for all of these. It shows you really worked hard but enjoyed it along the way. How about sending in to next month's challenges?