Study the following information carefully and answer the questions given below:
Each of the six persons, P, Q, R. S. T and U has travelled to different number of countries. R has travelled to more number of countries than only S and T. Q has travelled to more number of countries than U but less than P. T is not the person who has travelled to least number of countries. The one who has travelled to second highest number of countries has travelled to 8 countries. The one who has travelled to the least number of countries has travelled to only two countries.