Question

A machine needs 2 of its gears replaced. You find 2 gears, one manufactured 5 years ago and the other manufactured 10 years ago. The specifications sheet says that the chance of failure is 5% after 5 years and increases to 8% after 10 years. If the gears on the machine are in no way linked to each other, what are the chances that both will fail?

Answer 1

0.2%
0.9%
40%
7.5%
0.4%

Answer 2

wat is 5% x 8%?

Answer 3

wats 0.05 x 0.08?

Answer 4

@willtom