Funny Google rounding error …
Try this search on Google: 1 – 0.9 – 0.1
the answer they give is: 1 – 0.9 – 0.1 = -2.77555756 × 10-17
of course the right answer is zero, which is what Yahoo Search gives:
1 – 0.9 – 0.1 = 0
to illustrate the problem with Google rounding:
1 / ((1 – 0.9 – 0.1) * (10^17)) = -0.36028797
when the right answer should be infinity, however yahoo gives this same wrong answer too:
1/((1 – 0.9 – 0.1) * (10^17)) = -0.3602879702
— amr