Combination or Permutation

₁₂C₃

• 36

• 66

• 220

• 500

Prgya is stringing 3 different types of beads on a bracelet. How many ways can she string the next three beads if they must include one bead of each type?

• 1

• 3

• 6

Rob and Mary are planning trips to nine countries this year. There are 13 countries they would like to visit. They are deciding which countries to skip.

• Permutation

• Combination

A team of 8 basketball players needs to

choose a captain and co-captain.

• Permutation

• Combination

There are 45 applicants for three Computer

Programmer positions.

• Permutation

• Combination

Castel and Joe are planning trips to three countries this year. There are 7 countries they would like to visit. One trip will be one week long, another two days, and the other two weeks.

• Permutation

• Combination

You are setting the combination on a

three-digit lock. You want to use the

numbers 123 but don't care what order they

are in.

• Permutation

• Combination

A group of 25 people are going to run a

race. The top 8 finishers advance to the

finals.

• Permutation

• Combination

There are 110 people at a meeting. They

each shake hands with everyone else. How

many handshakes were there?

• Permutation

• Combination

A team of 17 softball players needs to

choose three players to refill the water

cooler.

• Permutation

• Combination