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Marks obtained by 7 students in a subject are 30,55 , 75,90,50,60,39 . The number of students securing marks less than the mean marks is

Options

  1. A7
  2. B6
  3. C5
  4. D4

Correct answer

D. 4

Step-by-step solution

aligned x & = 30+55+75+90+50+60+39 7 & = 399 7 =57 aligned number of students =4

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