Questlon - 4: For each department relrieve the department number, number of employees and their average salary. Question-5: For each project, retrieve the project name, number of employees from...

Extracted text: Questlon - 4: For each department relrieve the department number, number of employees and their average salary. Question-5: For each project, retrieve the project name, number of employees from department number 4 who work on the project Question -6-Retrieve the first name, last name, project location of all every employee who wotks on project 2