1.a)if the # is > 0 , action 1 will work, if # is < 0, action 2 will work.  b) if the # is > 0 and < 100, action 1 will work. If # is < 0 or > 100, action 2 will work. 2.When we complete code coverage, that every line in a program is executed at least once.3. Equivalence class – they are equivalent from the perspective of testing the same path through the program. ex) when the employee type is 1, test data for the payroll program fall into just two equivalence class: o hours between 0 and 40 and hours greater than 40.  4. Boundary Condition – on or near the boundaries between equivalence classes. ex) for the payroll program, this requirement means testing with hours equal to 39, 40, and 41.5. extreme conditions – that is what data at the limits of validity. ex) we choose hours worked equal to 0 to 168 hours.  6. equivalence  class When the teacher type is 1, grades data fall into two equivalence class grades between 0 to 60 and grades greater than 60. boundary condition – 59, 60 and 61 extreme condition – 0 to 100