What is the probability that....

Please someone help me with this, I have the book in front of me but I just cant seem to grasp this problem...

A local company has a policy that it will reject a shipment of parts from its supplier if inspectors find any defective parts in a random sample of five parts from the shipment. The supplier has been in business many years and has a long term defective rate for parts of only 5.7%.

What is the probability that a shipment will be rejected after a given sample of parts is checked?

defective rate = 5.7%, so ok rate = 94.3% = 0.943

P[rejected] = 1 - P[all ok] = 1 - 0.943^5 = 0.2543 <--------