Ancient Egyptian Mathematics
Introduction The term symbology is used to describe a system in which different symbols or signs are used to represent information be it letters, numbers, words or instructions. Mankind has …
Course: Maths Puzzles: Cryptarithms, Symbologies and Secret Codes
Challenge solution
OK – so we’ve got that done. Now it’s time to wrap up the week, so go ahead, mark this step as complete and click ‘next’.
Solve the alphametic part of the course challenge
OK! Let’s get down to the course challenge. Try and solve the following cryptarithm: I x KINGJO = JOKING The hint is: I=4 In the video we mixed Capital and …
The different genres of cryptarithms
There is much more to cryptarithms than meets the eye! For instance, there exist different genres of cryptarithms. Double true Double true cryptarithms are alphametics where the letters spell the …
How to solve alphametic puzzles
I recommend reading this before watching the video… There are key elements to solving most alphametics. In many cases the result of an addition problem is one digit longer (in …
What are alphametics?
Alphametics are cryptarithms that spell out words. Given a mathematical expression, every digit in the expression is replaced by a letter. One of the most famous alphametics, spelling out ‘SEND …
Some simple Hindu Cryptarithms
In this slideshow we show you how to solve some basic cryptarithms. These are the three possible outcomes of Hindu problems – there can be one solution, multiple solutions or …
Ancient Hindu Problems
Hindu problems originated in India in the middle ages and are sometimes referred to as arithmetical restorations or skeleton problems. In these problems, digits are replaced by asterisks, for example: …
What are cryptarithms?
Cryptarithms Cryptarithms or crypt-arithmetic problems are encrypted math problems, where numbers in a given mathematical expression are represented by letters or other symbols. There are two main types of cryptarythms: …
The challenge from outer space
In this video I present a ‘challenge from outer space’ that will accompany you throughout the course. You can take a look and download the puzzle as a pdf file …
The encoding of Math problems vs. Secret Codes vs. Symbology
Think of a number. Any number. Write it down. Why does the number ‘look’ the way it looks? Why is the number 1 represented by a straight line? Why do …
Welcome from Dr. Yossi Elran
Welcome from Dr Yossi Elran This course is all about math puzzles, specifically cryptarithms, symbologies and operator puzzles. Each week will have a theme, and we’ll learn about it through …
Mayan arithmetic
Thanks – Erika and Eric Roldan, for sharing this with us. If you have any questions about Mayan arithmetic, please post in the discussions!
The Mayan number system
Erika Roldan is a mathematician from Mexico, who specialises in the history and philosophy of math and the popularisation of math in South America. I first met Erika at the …
Tests of divisibility and more hints
Some multiplication rules can really help us when we get stuck on a cryptarithm. Here are some rules you should know before taking the ‘plunge’ into the more difficult problems… …
These articles are from the online course:
Maths Puzzles: Cryptarithms, Symbologies and Secret Codes