Pegasus Inc. also produces weather radios. Target has 15 of these radios on their sales shelf. It turns out 7 of the radios are defective. 4 of the defective radios are scratched and the other 3 defective radios are missing an antenna. A customer buys 4 of these radios. What is the probability that they would get a. Four defective radios? b. No defective radios? c. At least one defective radio? d. All the scratched radios? e. Two good radios, a scratched radio, and a radio with no antennae?