a)2016-17
b)2018-19
Q.1 B)Solve the following sub questions.(Any 4)
1. Find the class mark of the class 10-20.
2. Find the ratio of 72& 60.
3. Solve. 3y + 8 = 22
A. Find the median of the data.30,25,32,23,42
5. Miss Nikita's age 27 years & her taxable inco
A
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1. class mark= upper limit + lower limit÷2
= 20+10÷2
= 30÷2
= 15.
3. 3y+8=22
3y=22-8
3y= 14
y=14÷3
y= 4.66(approximately)
4. Ascending order: 23,25,30,32,42
n=5(odd)
n+1÷2
5+1÷2
6÷2
3
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