Question id 300 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

Less than 10-9 (extremely improbable)
Between 10-7 and 10-9 (extremely remote probability)
Between 10-3 and 10-5 (probable)
Between 10-5 and 10-7 (remote probability)

Training tests and timed exam simulations ATPL - Airline Transport Pilot license