Final answer:
The total number of ways the manager can form the team from a pool of 20 employees is 1,158,000 ways, calculated by multiplying the number of choices for each role on the team.
Step-by-step explanation:
The student is asking how many ways the manager can assemble a team from a pool of 20 employees for a project. This is a problem of counting and combinatorics which can be solved using the concepts of permutations and combinations.
First, we select the team leader. This can be done in 20 different ways, since there are 20 potential candidates. Next, out of the remaining 19 employees, we select an assistant, which can be done in 19 ways. For the 4 other interchangeable team members, we need to choose 4 out of the remaining 18 employees which is a combination problem. The number of ways to choose 4 employees out of 18 without considering the order is given by the combination formula C(n, k) = n! / (k!(n-k)!), where n is the total number and k is the number to choose. Therefore:
Choose team leader: 20 ways
Choose assistant: 19 ways
Choose 4 team members: C(18,4) ways
Now we compute:
C(18,4) = 18! / (4!(18-4)!) = (18 × 17 × 16 × 15) / (4 × 3 × 2 × 1) = 3060 ways
So, the total number of ways the manager can form the team is 20 (team leader) × 19 (assistant) × 3060 (other members) = 1,158,000 ways.