Statistics probability

Question

a manufacturing machine has a 4% defect rate. if 4 items are chosen at random what is the probability that at least one will have a defect?

Answer 1

Probability that one has no defect = 1 - 0.04 = 0.96

Probabilty that 4 have no defects = 0.96⁴

Probability that at least 1 has a defect = 1 - 0.96⁴