He doesn't have good knowledge in mathematics. He only memorizes the questions which he would repeat. Give him a question he hasn't seen before and he won't be apply to solve it. Also, he is not a safe person for women. You might/definitely will contact the police if you are employing him for a female student. (Have to say this because it is true. Honestly) My advice, try to never contact him especially if you are looking for a teacher for your daughter/little sister or any female rather.
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