public function loadquestions($topicid, $start, $end)
{
$topic = Topic::findOrFail($topicid);
$questions = $topic->questions;
foreach ($questions as $question) {
$question->userfavourite;
$question->usersolved;
$question->userdoubt;
$question->typename;
$question->video;
}
return $questions;
}
