Ethiopian Math

Halved or Doubled - the answer is always right!

Ethiopian tribesmen can only double or halve numbers - by using pebbles as counters. By halving and doubling, they take any two numbers, multiply them and come out with the right answer.

For example, if a tribesman wants to buy 13 sheep at 15 Ethiopian dollars each, here's how he works it out...

Put 13 in a left column, and 15 in a right column. Halve the left figure - you get 6 1/2... ignore the 1/2 (Ethiopians don't know anything about fractions). Double the right-hand figure. Keep this up until the left-hand figure is 1. You should now have:

     13     15
      6      30
      3      60
      1    120

Even numbers in the left column are evil to the superstitious tribesmen, and must be destroyed - together with their guilty partners. So scratch out 6 and its partner 30. Now add the right-hand column and you have the correct answer: 195. Try this with any two numbers - it doesn't matter which side is halved or doubled - the answer is always right! The Ethiopian's primitive mind simply cannot grasp how our system works. Of course you see at once how this joe-k works... Or do you?

Mathematics has beauties of its own. - J.W.A. Young

Mathematics: the only subject that counts. - Unknown

I go to school the youth to learn the future. - Robert Frost

I graduated first in my class from alibi school. - Jeffrey McDaniel

Pedestrian: a man whose son is home from college. - Unknown

I've won at every level, except college and pro. - Shaquille O'Neal

Most every dental school has discount dental services. - Matthew Lesko

Math, it's a puzzle to me. I love figuring out puzzles. - Maya Lin

Dear Math: I'm not a therapist. Solve your own problems. - Unknown

Cauliflower is nothing but cabbage with a college education. - Mark Twain

A college education shows a man how little other people know. - T.C. Hailburton

Mathematics is the science which uses easy words for hard ideas. - James Roy Newman

Example is the school of mankind, and they will learn at no other. - Edmund Burke

I was a great student at a great school, Wharton School of Finance. - Donald Trump

Texas is now a cornerstone of the electoral college for Republicans. - Ed Gillespie

I don't want to send them to jail. I want to send them to school. - Adlai Stevenson

College is a place to keep warm between high school and an early marriage. - George Gobel

Law school is the opposite of sex. Even when it's good it's lousy. - Unknown

In mathematics, you don't understand things. You just get used to them. - John von Neumann

Perhaps the most surprising thing about mathematics is that it is so surprising. - E.C. Titchmarsh

Life is good for only two things: discovering mathematics and teaching mathematics. - Simeon Poisson

When I was in high school, I earned the pimple award and every other gross-out award. - Jack Nicholson

I can get motivated seeing a kid at my son's school overcome a learning disability. - Jason Alexander

Mathematics is the cheapest science. All one needs for mathematics is a pencil and a paper. - George Polya

Mathematics is a game played according to certain simple rules with meaningless marks on paper. - David Hilbert

Anyone who has been to an English public school will always feel comparatively at home in prison. - Unknown

For the execution of the voyage to the Indies, I did not make use of intelligence, mathematics or maps. - Christopher Columbus

Mathematics is distinguished from all other sciences except only ethics, in standing in no need of ethics. - Charles Peirce

Smartness runs in my family. When I went to school I was so smart my teacher was in my class for five years. - George Burns

Mathematics is the only science where one never knows what one is talking about nor whether what is said is true. - Bertrand Russell

The chief reason for going to school is to get the impression fixed for life that there is a book side for everything. - Robert Frost

There are advantages to being President. The day after I was elected, I had my high school grades classified Top Secret. - Ronald Reagan

Mathematics is indeed dangerous in that it absorbs students to such a degree that it dulls their senses to everything else. - Prinz zu Hohlenlohe-Ingelfingen Kraft

The Arc de Triomphe, the Eiffel Tower. They're monumental. They're straight out of Page 52 in your school history book. - Billy Crystal

Mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true. - Rene Descartes

Mathematics takes us into the region of absolute necessity, to which not only the actual word, but every possible word, must conform. - Bertrand Russell

My son really has the spirit of Valentine's Day. When he was in college, he used to send his mother a heart-shaped box of laundry. - Milton Berle

As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality. - Albert Einstein

A man who has never gone to school may steal from a freight car; but if he has a university education, he may steal the whole railroad. - Theodore Roosevelt

Mathematics began to seem too much like puzzle solving. Physics is puzzle solving, too, but of puzzles created by nature, not by the mind of man. - Maria G. Mayer

see also   College,  Puzzle  &  School  Sections
Canadian Math
Chair Ruler
Chocolate Math
College Math Creativity
Dancing Mathematician
Detroit High School - Math Proficiency Exam
Hangman Math
Hot Dog Math
Kwik-Mart Math
Long Math Class
Math Clock
Math Dice
Math in Africa
Math Mug
Math Riddle
Math Watch
Mennonite Longhand Math
Redneck Math
suJoku Puzzles
WalMart Math


Psychic Fair

Bread Dress

Cherry Picker

PMS Center

The Ass Family

Surf Lessons

Diet Water

Proof of Global Warming

Electricity Storage

Socket To Me

Snail Time

Segway Stroller

Wine Worms

Bear Surveillance

Move Over

Guard Roos

Rich Man's Hobby

Illusive Dice

Rainbow Eucalyptus Trees

Passing The Buck
Full list of creditsFacebookTwitterDiggStumbleUponDelicious