The marks of 11 students of a class are as given below:78, 11, 99, 63, 94, 6, 78, 36, 30, 55, 22The range of marks is
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The marks of 11 students of a class are as given below : 78,11,99,63,94,6,78,36,30,55,22. The range of marks is 90. 91.
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