Is the probability zero?

D H

Whether you are in a math class or a physics class, saying "1/infinity isn't zero. It's infinitely small..." is not correct. In a math class, "1/infinity" is not defined, end of story. In a physics class, 1/infinity is short for [itex]\lim_{x\to\infty} \frac 1 x[/itex], and this is zero.

D H Mentor	Whether you are in a math class or a physics class, saying "1/infinity isn't zero. It's infinitely small..." is not correct. In a math class, "1/infinity" is not defined, end of story. In a physics class, 1/infinity is short for [itex]\lim_{x\to\infty} \frac 1 x[/itex], and this is zero.