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1. How many tennis teams of 6 players can be formed from 14 players without regard to position played?
2. What is the number of permutations of 11 objects taken 4 at a time?
3. How many different committees of 4 people can be formed from a pool of 7 people? 4. A class is to select a president, a vice president, a secretary and a treasurer from 7 class members. How many arrangements of class officers arepossible?