Perguntas de entrevista de vagas de Full Stack Web Developer da empresa Quovantis Technologies

I m worry about company interview process , developer ask unnecessary logical question from starting and he is not friendly . he is asking only three questions and i think his question is very rare . 1 what is missing number in array of n number .2 Write a custom code and reverse string without any pre define function . his 3rd question is from laravel framework : what is job and write the code.