laravel exists validation

1$rules = ['Fno' => 'numeric|min:2|max:5', 'Lno' => 'numeric|min:2'];
2

1'item' => 'required|integer|between:1,10',

1'email' => 'required|email|unique:users,email',
2//@sujay

1'state_id' => 'exists:states,id'

1/**
2 * Store a new blog post.
3 *
4 * @param  Request  $request
5 * @return Response
6 */
7
8public function store(Request $request)
9{
10    $validatedData = $request->validate([
11        'title' => 'required|unique:posts|max:255',
12        'body' => 'required',
13    ]);
14
15    // The blog post is valid...
16}

1/**
2 * Store a new blog post.
3 *
4 * @param  Request  $request
5 * @return Response
6 */
7public function store(Request $request)
8{
9    $validatedData = $request->validate([
10        'title' => 'required|unique:posts|max:255',
11        'body' => 'required',
12    ]);
13
14    // The blog post is valid...
15}