
Select 21 questions
You have a test paper consisting of 35 questions.
The test paper consists of 4 Parts  A,B,C and D.
Part A consists of 7 questions.
Part B has 8 questions.
Part C has 10 questions.
Part D has 10 questions.
From part A you need to do atleast 3 questions.
From part B and C together you need to do 5 questions atleast.
From Part C and D together you can do atmost 7 questions.
You need to attempt a total of 21 questions from the whole paper.
in how many ways can you attempt the test paper?