Calculate the probability of circuit breakage.

A breakage of the electrical circuit occurs if either an element ${K}_{1}$ or both elements ${K}_{2}$ and ${K}_{3}$ break. The elements ${K}_{1},{K}_{2},{K}_{3}$ break independently of each other with probabilities respectively 0.3, 0.2, 0.1. Calculate the probability of circuit breakage.

A breakage of the electrical circuit occurs if either an element ${K}_{1}$ or both elements ${K}_{2}$ and ${K}_{3}$ break. The elements ${K}_{1},{K}_{2},{K}_{3}$ break independently of each other with probabilities respectively 0.3, 0.2, 0.1. Calculate the probability of circuit breakage.