Quick Formative on Combinations & Permutations

Evaluate.

 $\ \ _{10}C_4$  

• 5040

• 210

• 0

• 40

Evaluate.
 $\ \ \ _{15}P_3$ 

• 2730

• 45

• 455

• 0

Ashlyn needs to bring a dessert to her dinner party. If the bakery has eight pies to choose from, how many ways can Ashlyn choose three?

• 336
• 56
• 24
• 100

A restaurant offers four appetizers, nine entrees,and three desserts. How many different ways can Angela choose a three course meal?

• 36
• 100
• 108
• 27

12 students are signed up to run the mile in the cross country meet this weekend. How many ways can they finish 1st, 2nd and 3rd?

• 1320

• 220

• 1728

• 1000

Max’s cell phone uses a three-digit pin to unlock it. How many different possible ways can he make a pin number using the digits 0-9?

• 90
• 729
• 27
• 1000

There are 125 juniors at the high school. How many ways can they elect a president, vice president,and secretary?

• 1906500
• 317750
• 375
• 1953125

True or False.

Order matters when you are dealing with a combination.

• True

• False

Combination or Permutation:

Cassie picks 2 trails to hike this weekend out of 5.

• Combination

• Permutation

Combination or Permutation:

Mr. Plybon needs to pick a 1st and 2nd chair from 4 trombone players.

• Combination

• Permutation