Thread:Aveoq01/@comment-4263450-20130729174211/@comment-7326455-20130807054413

It's asymptotic - which is to say, as you make more and more attempts, the odds of having at least one successful attempt from among those gets closer and closer to 100%, but never quite gets there. An infinite number of attempts would guarantee success, but would also take an infinite amount of time.

140 attempts gives you about a 75% chance of a successful attempt.