Mis metodos edit y update
public function edit($id){
$exams = Exam::find($id);
$category = Category::orderBy('id', 'ASC')->get();
$questions = Question::find($id);
return view('question.edit', compact('exams','questions', 'category'));
}
public function update(QuestionUpdateRequest $request, $id){
$category = Category::orderBy('id', 'ASC')->get();
$questions = Question::find($id);
return view('question.index', compact('category', 'questions'));