Which is an example of deductive reasoning? Ali notices that a plant grows 2 inches each week. Nikki has a plant, so it must grow 2 inches each week.
Bruce asks his friends what kind of music they like best. They all say rock, so everyone in the world likes rock
music best.
All even numbers are divisible by 2. The number 18 is even, so it is divisible by 2.

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?