Consider the following table in respect of students of 4 schools who appeared in a test:

If the average marks of the students of all four  schools are 58, then. how many students appeared from School-IV ?

 

A cone and a hemisphere have equal bases and equal volumes. What is the ratio…

A vertical tower standing at the corner of a rectangular field subtends angles of 60°…

A pole on the ground leans at 60° with the vertical. At a point x…

If 6 + 8tanθ = secθ and 8 – 6tanθ = ksecθ, then what is…

What is (1 + cotθ – cosecθ)(1 + tanθ + secθ) equal to?