Pregunta: 1. In an experiment to determine the communities bacteria in an aquatic environment different samples will be taken for each possible configuration of: type of water (salt water or sweet), season of the year (winter, spring, summer, autumn), environment (urban or rural). If two samples are to be taken for each possible configuration, how many samples are

1. In an experiment to determine the communities bacteria in an aquatic environment different samples will be taken for each possible configuration of: type of water (salt water or sweet), season of the year (winter, spring, summer, autumn), environment (urban or rural). If two samples are to be taken for each possible configuration, how many samples are going to be taken? 2. An academic senate has 15 members. will form a special committee of 5 members. In how many different ways can you form the committee? 3. Suppose the academic senate is made up of 10 faculty representatives and 5 ex-officio members. The committee must contain 4 faculty representatives and 1 member ex officio. In how many different ways can the committee be formed?