Telephone companies nationwide held a very small pool of unassigned numbers _ including 511, 611 and 911 _ in reserve, she said.
2.
Each driver chooses an unassigned number from 2 99 ( excluding 17 ) upon entering Formula One, and keeps that number during their time in the series.
3.
In this version, the 2 secretly unassigned numbers are referred to as'ghost numbers .'If the player throwing the ball into the air calls a ghost number, all players will then chase after the ball and try to touch it.