This video contains solution of ex 7.1 of unit 7 which is about permutations and conbinations and this exercise is about the definition of factorial and its applications and fundamental principle of counting . This video is for the students of fsc part 1 of punjab colleges and boards and this video contains exercise 7.1 of chapter 7 which is permutations and combinations. 0:00 Concepts 4:11 Question 1 8:20 Question 2 11:45 Question 3 14:09 Question 4 15:01 Question 5 18:03 Question 6 19:37 Question 7 #11thmath #11thmath #firstyearmath #11thmaths