Екатерина

const student = {
    name   : 'Sasha',
    age    : 46,
    surname: 'Belov',
  };
  const studentCS = { ...student };
  studentCS.speiality = 'Computer Science';

  const courses = {
    Math   : 10,
    English: 9,
    Sport  : 8,
  };
  const permissions = {
    canView : true,
    canEdit : false,
    canPrint: true,
  };
  Object.assign(studentCS, courses, permissions);
  console.log(studentCS);

  studentCS.average = function () {
    return (this.Math + this.Sport + this.English) / 3;
  };
  studentCS.checkPermission = function () {
    return [
      this.canView,
      this.canEdit,
      this.canPrint,
    ].filter(i => i).length;
  };
  console.log('Score: ' + studentCS.average());
  console.log('Number of enabled rights: ' + studentCS.checkPermission());