In a question paper there are two parts A and B . Part A contains 6 questions and part B contains 7 questions . in how many ways a student can select 4 questions in part A of which 2 questions are compulsory and 5 questions in part B of which 3 questions are compulsory ?????PLZZZ SOLVE THIS

Question

I tried but it is fruitless

Answer 1

4C2 x 4 C2 = 36

Answer 2

How please explain

Answer 3

10 question out of 13 question to answer