1.

The mean score of a person is 30 in 'n' exams. If he would have scored six marks extra in each of the first (n-1) exams, his mean score would have been 35. Find the number of exams.

Answer»

The mean score of a person is 30 in 'n' exams. If he would have scored six marks extra in each of the first (n-1) exams, his mean score would have been 35. Find the number of exams.




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