Study the following information carefully and answer the given questions: Eight persons P, Q, R, S, T, U, V and W, got appointments on either 10th or ...

Study the following information carefully and answer the given questions: Eight persons P, Q, R, S, T, U, V and W, got appointments on either 10th or 15th of different months of the same year starting from March to June. Not more than two persons got appointment in a same month. Only one person got appointment on each date. V got appointment in the month which has odd days. There were four persons got appointment between V and S. P got appointment before S but not in the month of March. Q got appointment in the month which has even number of days. Three persons got appointment between Q and T. R got appointment before U and both of them got appointment in the month which has odd numbered days. W did not get appointment on 10th of any of the month and he did not get appointment just before S. T got appointment in one of the months before the month in which Q got appointment. P did not get appointment just before S.

Question: How many persons got appointments before U?