SOLUTION: Find the number of ways a president, vice president and secretary can be chosen from a committee of ten members, if no member can serve in more than one office.
President, Vice-president, and Secretary create a certain order, so order
matters, so it's the permutations, (not combinations), of 10 things taken 3
at a time.
10P3 = 10*9*8 = 720 ways.
Edwin