22 April 2018

One half

Some mathematical operations whose result is \(\frac{1}{2}\):

  • \(\cos 60º = \frac{1}{2}\);
  • \(\frac{\cos 30º}{\sqrt 3}=\frac{1}{2}\);
  • \(\frac{1}{3}+\frac{1}{6}=\frac{1}{2}\).
Using all the digits from \(1\) to \(9\):
  • \(\frac{6,729}{13,458}=\frac{1}{2}\).
Using the same number twice but changing the position of one digit:
  • \(\frac{105,263,157,894,736,842}{210,526,315,789,473,684}=\frac{1}{2}\).
Numbers with such property are called parasitic numbers.

No comments:

Post a Comment