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Given below are the marks (out of 100) i...

Given below are the marks (out of 100) in mathematics obtained by 20 students of a calss in an annual examination.
23,75,56,42,70,84,92,51,40,63,87,58,35,80,14,63,49,72,66,61.
Arrange the above data in ascending order and find
(i) The lowest marks obtained.
(ii) The highest marks obtained.
(iii) The range of the given data.

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