38.
Each of P, Q, R, S, T, U and V has an exam on a different day of a week starting from Monday and ending on Sunday of the same week. Q has an exam on Saturday. Only 4 people have exams between T and U, neither of whom has an exam on Monday. P has an exam immediately after V, and R has an exam immediately before V. U has an exam after P. How many people have exams after R?