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Find the Class Mark of the Classes 20-30 and 30-40. - Algebra

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Find the class mark of the classes 20-30 and 30-40.

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Solution

`"Class mark" = ("Upper limit"+"Lower limit")/2`

∴`"Class mark of the class" 20-30 =(30+20)/2=50/2=25`

`"Class Mark of the class"30-40=(40+30)/2=70/2=35`

 

 

 

Concept: Basic Ideas of Probability
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