Random.Range
static function Range(min: float, max: float): float;
Description

Returns a random float number between and min [inclusive] and max [inclusive] (Read Only).

	// Instantiates prefab somewhere between -10.0 and 10.0 on the x-z plane 
	var prefab : GameObject;
	function Start () {
		var position: Vector3 = Vector3(Random.Range(-10.0, 10.0), 0, Random.Range(-10.0, 10.0));
		Instantiate(prefab, position, Quaternion.identity);
	}
static function Range(min: int, max: int): int;
Description

Returns a random integer number between min [inclusive] and max [exclusive] (Read Only).

If max equals min, min will be returned. The returned value will never be max unless min equals max.
	// Loads a random level from the level list

Application.LoadLevel(Random.Range(0, Application.levelCount));