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Std 10 Standard Maths Board Exam 2022 ||...

Std 10 Standard Maths Board Exam 2022 || GSEB 2022 Paper

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The means and standard devation of the marks of 200 candidates in half early exam were found to be 40 and 15 respectively. The marks of the candidates exceeds their marks by 10 in final exam. The mean and standard deviation of the marks in final exam are respectively ?