find the class mark of 21-25
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Class mark = Higher Limit - Lower Limit
21-25 's classmark :
25-21 = 4 .
The required classmark is = 4 .
21-25 's classmark :
25-21 = 4 .
The required classmark is = 4 .
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If the previous class- interval is 16-20and succeeding class interval is 26-30
Then the class mark is (upper boundry - lower boundry) =20.5-15.5=5
Then the class mark is (upper boundry - lower boundry) =20.5-15.5=5
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