Must provide information on how pascals triangle is used for answers Straight to the point answers also pls, nothing too long

Answer the following questions, providing an explanation of how you used Pascal's triangle found on page 706 (11th edition) or page 557 (12th edition) of your textbook to arrive at your answer. (2 pts each) 1) sC3 Answer: 2) 10 C8 Answer: 3) Suppose 9 fair coins are tossed. Find the number of ways of getting exactly 6 heads. Answer: 4) Find the number of ways of getting exactly 2 heads if 4 fair coins are tossed