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ICSE Class X Math 2014 Paper

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The marks obtained by 100 students in a Mathematics test are given below :
 Marks  No. of Students
 0-10  3
 10-20  7
 20-30  12
 30-40  17
 40-50  23
 50-60  14
 60-70  9
 70-80  6
 80-90  5
 90-100  4
Draw an ogive for the given distribution on a graph sheet.
(Use a scale of 2 cm=102\,\mathrm{cm}=10 units on both axis).
Use the ogive to estimate the :
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Question : 47 of 52
Marks: +1, -0
number of students who obtained more than 85%85 \% marks in the test.
Solution:  
The number of students who obtained more than 85%85 \% marks in test
=100−95=100-95
=5=5 students.
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