Monday 25 April 2011

0.99999..... = 1

My sister just enlightened me with this 0.999.... is equal to 1

Proof:-

X = 0.999....
10X = 9.999...
10X - X = 9.999.... - 0.999.....
9X = 9
X = 9/9
X=1

therefore 0.999.... = 1

with that, a slight humoured maths joke, for all you geeks,

Q: How many mathematicians does it take to screw in a lightbulb?
A: 0.999999....

1 comment:

  1. How interesting, your sister must be very insightful.

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