Depends on whether you are playing single player or multiplayer. Single player is not long see related link Multiplayer is much longer and can continue into the zombie map
4-5 seconds.
Call of Duty 1 Call of Duty The big red one Call of Duty 2 Call of Duty 3 Call of Duty 4 : Modern Warfare Call of Duty : World at War Call of Duty : Modern Warfare 2 Call of Duty : Blackops Call of Duty : Modern Warfare 3 9 Call of Duties all together, 6 if you take out the modern warfares...
That depends on your skill level and how long you play.
7 days if you can play good!
Call of duty modern warfare 2
Treyarch - Call of Duty Infinity Ward - Call of Duty 2 Treyarch - Call of Duty 3 Infinity Ward - Call of Duty 4: Modern Warfare Treyarch - Call of Duty: World at War Infinity Ward - Call of Duty: Modern Warfare 2 They take turns every year so no, Treyarch made CoD 3
Not very long; probably under a minute.
it took them roughly about 6 months :)
exactly 1.23956364647901225 days
Depends on your connection speed.
Getting to level 55 doesn't take that long. If your good, it should be a breeze.
To defuse or plant a bomb in Call of Duty Ghosts, it will take 5.5 seconds.