Could you solve the questions please? THANK YOU SO MUCH!!

I State if each scenario involves a permutation or a combination. Then find the number of possibilities. Castel and Joe are planning trips to three There are 110 people at a meeting. They countries this year. There are 7 countries each shake hands with everyone else. How they would like to visit. One trip will be many handshakes were there? one week long, another two days, and the other two weeks. You are setting the combination on a 6 A group of 25 people are going to run a three-digit lock. You want to use the race. The top 8 finishers advance to the numbers 123 but don't care what order they finals. are in. 3 A team of 17 softball players needs to 5 out of 13 students will ride in a car choose three players to refill the water instead of a van cooler. The student body of 10 students wants to 8 Selecting which seven players will be in the elect a president, vice president, secretary, batting order on a 11 person team. and treasurer