Question

Classify the data given below as primary or secondary data.

1) shoe size of students of class 9
2) the blood group of any 20 of your friends
3) number of members in the families of your classmates
4) Marks obtained by 30 students in a mathematics test.
5) number of plants by 100 school during van mahotsava
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Answer 1

Answer:

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Answer 2

Answer:

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