Students at Kettering High School were planning a Spring Fling dance. They wanted to choose a color theme from the colors blue, green, pink, and red, so they surveyed students and created a 1000 two-way table with the results. Afterward, the students' sponsor, Mr. Poge, randomly selected a student in the school. Find the probability of each as a decimal (round to 3 decimal places):

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?