UPSC NDA 2 2019 Mathematics Solved Paper
© examsiri.com
Question : 120 of 120
Marks:
+1,
-0
The mean weight of 150 students in a certain class is 60 kg. The mean weight of boys is 70 kg and that of girls is 55 kg. What are the number of bous and girls respectively in the class?
[NDA II 2019]
Go to Question: