Combinations

Kimberly has seven colors of lanyards. She uses three different colors to make a key chain. How many different combinations can she choose?

• 210

• 5.040

• 6

• 35

Tags

CCSS.HSS.CP.B.9

A box contains 5 color pencils. How many different sets of 3 pencils can be chosen from it?

• 10

• 4

• 6

• 20

Find the number of ways in which 3 components can be selected from a batch of 20 different components

• 6840

• 1140

• 402

• none of the above

Assem wants to join a DVD club that offers a choice of 12 new DVDs each month

If Assem wants to buy 4 DVDs, find the number of different sets he can buy

• 11880

• 19958400

• 495

• 479001600

Find the number of possibilities:
A team of 17 softball players needs to choose three players to refill the water cooler.

• 272
• 4080
• 680

Tags

CCSS.HSS.CP.B.9

Four students need to be selected from a class

of 15 to help clean up the campus. How many different ways can the 4 students be chosen?

• 32 760

• 60

• 1 365

Tags

CCSS.HSS.CP.B.9

In how many ways a committee of 4 member be selected from 5 men and 4 women?

• 125

• 124

• 126

• 127

There are fourteen candy bars to choose from at the gas station. How many ways can you choose five of them?

• 240240

• 2002

• 19

• 70

Calculate $_{11}C_5$ . 

Calculate $_7C_2$ .