In a class of 40 students, Latha's rank is 15th from the top. What is her rank from the bottom?

Among five people named V, W, X, Y and Z, each has a different age. Z is older than Y but younger than W. X is older than V but younger than Y. Who among them is the second oldest?

In a row of students facing North, P was standing 17th from the left end and 23rd from the right end. If Q was standing exactly in the middle of the row, what was Q's position from the left end?