The following is what seems to be a mathematical proof that ten equals 9.999999.... What's wrong with it?
a = 9.999999...
10a = 99.999999...
10a - a = 90
9a = 90
a = 10
clipped from statspuzzles.blogspot.com
What's Wrong With That?
The following is what seems to be a mathematical proof that ten equals 9.999999.... What's wrong with it?
a = 9.999999...
10a = 99.999999...
10a - a = 90
9a = 90
a = 10
Eli siis suomennettuna: todistuksessa esitetään, että 10 = 9,999999... Onko siinä jotain vikaa?
Täältä voit käydä lukemassa asiasta käydyn keskustelun, mutta se on englanniksi.