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?


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

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

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

Mathematics knows no races or geographic boundaries. - David Hilbert

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

Pure mathematics, may it never be of any use to anyone. - Henry Smith

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

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

Mathematics has given economics rigor, but alas, also mortis. - Robert Heilbroner

God made the Idiot for practice, and then He made the School Board. - Mark Twain

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

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

Like the crest of a peacock, so is mathematics at the head of all knowledge. - Indian Proverb

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

For the things of this world cannot be made known without a knowledge of mathematics. - Roger Bacon

Let us grant that the pursuit of mathematics is a divine madness of the human spirit. - Alfred Whitehead

The college graduate is presented with a sheepskin to cover his intellectual nakedness. - Robert M. Hutchins

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

There are 3 kinds of people in this world: those who are good at math, and those who aren't. - Unknown

If a young person has any idealism at all, it's strongest about the time he finishes college. - Sargent Shriver

If I feel unhappy, I do mathematics to become happy. If I am happy, I do mathematics to keep happy. - Alfred Renyi

I must study politics and war that my sons may have the liberty to study mathematics and philosophy. - John Adams

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

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

In school, every period ends with a bell. Every sentence ends with a period. Every crime ends with a sentence. - Steven Wright

What if the kid you bullied at school, grew up, and turned out to be the only surgeon who could save your life? - Lynette Mather

The most painful thing about mathematics is how far away you are from being able to use it after you have learned it. - James Newman

Mathematics is like checkers in being suitable for the young, not too difficult, amusing, and without peril to the state. - Plato

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

I went to a Catholic boys' school for a year, but that was to play hockey. Religion class was quite contentious for me. - Keanu Reeves

It is the studying you do after your school days that really counts. Otherwise, you know only that which everyone else knows. - Henry L. Doherty

I think sleeping was my problem in school. If school had started at four in the afternoon, I'd be a college graduate today. - George Foreman

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

Doctors are saying that each piece of bacon you eat takes 9 minutes off of your life. Based on that math, I should have died in 1732. - Unknown

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

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

I was thrown out of college during my freshman year, for cheating on my metaphysics final - I looked within the soul of the boy sitting next to me. - Woody Allen


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

 

Redneck ATV

Duct Tape - for a Prettier World

Don't Get Your Head In A Knot

Cornfield Fishing

Dawn Gone

Highest Human Position In The World

Together Since

You Never Call

CLUMSY Driver

Water Short

Post Research

Motorcycle Taxi

Columbia Street Party

Fly By Meal

Down Day

Hanging Out With Friends

You Want Me To Do What?

Mirror Lake

Kitchen Thing

Light Road
Full list of creditsFacebookTwitterDiggStumbleUponDelicious

20-Aug-2019