Drawing fuses out of a box
September 9th, 2022
1. A box contains ten fuses of which 3 are defective. Two fuses are selected at random from the box without replacement. What is the probability that exactly one of the fuses selected is defective?
2. A box contains one hundred fuses of which 30 are defective. Ten fuses are selected at random from the box with replacement. What is the probability that no more than 4 of the fuses selected are defective?