I don’t understand lol

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.

Me with this one question, and i'll upvote the brainliest answer

How is the number of vertices for a prism related to the name of the prism