Brent’s after-school game club has 12 members from which a six-member team is created. Miguel’s after-school sports club has 10 members from which a six-member team is created.

Which student’s club has more possible combinations for his six-member team?

Brent’s club has more possible team combinations because he has fewer members on each team than Miguel’s does.
Brent’s club has more possible team combinations because there are more members to choose from.
Miguel’s club has more possible team combinations because there are fewer members in his club.
Miguel’s club has more possible team combinations because he has more members on each team than Brent does.

1 answer

To determine which student’s club has more possible combinations for their six-member teams, we can calculate the number of combinations for each club using the combinations formula:

\[ C(n, r) = \frac{n!}{r!(n - r)!} \]

where \( C(n, r) \) is the number of combinations, \( n \) is the total number of members in the club, and \( r \) is the number of members to be chosen for the team.

  1. Brent’s club:

    • Total members (\( n \)) = 12
    • Members chosen for the team (\( r \)) = 6

    \[ C(12, 6) = \frac{12!}{6! \cdot (12 - 6)!} = \frac{12!}{6! \cdot 6!} = \frac{12 \times 11 \times 10 \times 9 \times 8 \times 7}{6 \times 5 \times 4 \times 3 \times 2 \times 1} = 924 \]

  2. Miguel’s club:

    • Total members (\( n \)) = 10
    • Members chosen for the team (\( r \)) = 6

    \[ C(10, 6) = \frac{10!}{6! \cdot (10 - 6)!} = \frac{10!}{6! \cdot 4!} = \frac{10 \times 9 \times 8 \times 7}{4 \times 3 \times 2 \times 1} = 210 \]

Now, let's compare the results:

  • Brent’s club: 924 combinations
  • Miguel’s club: 210 combinations

Based on this analysis, Brent’s club has more possible combinations for his six-member team.

The correct conclusion is: "Brent’s club has more possible team combinations because there are more members to choose from."