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Marks obtained by 70 students are given below:
Marks
20
70
50
60
75
90
40
No. of
Students
8
12
18
6
9
5
No . of
students
c.f
38
44
Find the median. (Ans:50)
Ans:
53
58
N = 70
N/2 = 70/2 = 35
The corresponding value of marks for 35 is 50
12.+12+
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tens digit of a 2-digit number is twice its unit digit. If the sum of the digit is 12, find the number.
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whats nine plus 10
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