Kale works in a packaging factory that has 900 employees. By the end of each day, they manage to package 3. 2 Ă— 105 products. What is the average amount of products packaged per employee represented in scientific notation? Round so the first factor goes to the tenths place.

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?