Solve this proportiona

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

How do you find the circumfrance of a circle?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out