Her position is 81 from top of the queue.
Q1. What is the next two rows of numbers?
Q2. How was this reached?
In a class of 60 students, where the number of girls is twice that of boys, Kamal, a boy ranked seventeenth from the top. If there are 9 girls ahead of Kamal, how many of boys in rank after him?
If the canal is 10 m wide at the top and 6 m wide at bottom and the area of cross-section is 640 m^2. What is the length of canal is (The cross-section of a canal is a trapezium in shape)?