In the first semester of B.S. degree, a student is expected to take 4 subjects. The grades for each subject can be S(10points), A(9points), B(8points), C(7points), D(6points), E(5points) and F(Fail). As per the rules, an enrolled student should obtain a minimum grade E in each subject to get promoted to the next semester. What is the total number of possible ways in which a student can get promoted?
