These are both introduction to probability course questions. I'm having a hard time finding out how to approach these. How do I know if they are permutation, combination, or conditional probability problems.

r .1. A city with 6 districts has 6 robberies in a particular week. Assume the robberies are located randomly, with all possibilities for which robbery occurred where equally likely. What is the probability that some district had more than 1 robbery? 6. A Miriam is. pregnant with twin beys. Twins may be either identical or fraternal (nomiden tical). In general, 1/3 of twins born are identical. Obviously, identical twins must be of the same sex; fraternal twins may or rosy not be. Assume that identical twins are equally likely to be both boys or both girls, while for fraternal twins all possibilities are equally likely. Given the above information, What is the probability that the women's twins are identical