Direction: Study the following information carefully and answer the given questions.

There are seven students K, L, M, N, O, P and Q score different marks in a mathematics exam.

N scores more marks than K and Q, but not more than L. L does not score the highest marks and the score of L is 80 marks. Q scores the second lowest marks. O scores more than K, who does not score the lowest mark. M scores more marks than L. Student, who scores 3rd lowest marks, scored 65 marks. N is not the fourth highest. N scores more marks than O.