Help please. It’s urgent. Right answer gets brainliest

If i have one apple and give you the apple, how many apples do i have?

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?

Secant be and cf intersect at point d inside a what is the measure of cde