A landing gear system has repetitive stresses placed on it twice a day as a result of landings. The.

A landing gear system has repetitive stresses placed on it
twice a day as a result of landings. The probability of a failure during
landing is 0.0028. Determine the reliability of the landing gear system over a
3D-day contingency operation. What is the probability of a failure occurring
between days 10 and 20 of the operation?