EM2 Probability

3.  $\frac{7!4!}{6!2!}$  

• 84

• 62

• 96

8.A club with 10 members is to choose 3 officers, President, VP, and Secretary. How many ways can these positions be filled if only one person can have each job?

• 120

• 720

• 5040

16.Your friend is having a party and has 15 games to choose from. There is enough time to play 4 games. How many ways can you choose 4 games to play?

• 2906

• 3003

• 1365

What is the formula for Permutations?

• $\frac{n!}{\left(r-n\right)!}$

• $\frac{n!}{\left(n-r\right)!r!}$

• $\frac{n!}{\left(n-r\right)!}$

• 
  

  $\frac{203}{325}$
  

• $\frac{203}{2201}$

• $\frac{203}{711}$

13.How many distinguishable ways can you arrange the letters in the word BASKETBALL?

• 5,040

• 453,600

• 604,800

21.How many different ways can a theatrical group select 2 musicals and 3 dramas from 11 musicals and 8 dramas?

• 462

• 11628

• 3080

5.In how many different ways can 7 floats line up for the homecoming parade?

• 720

• 5040

• 1005

What is the probability of choosing a student who likes skateboards given that they do not like snowmobiles?

• $\frac{5}{11}$

• $\frac{9}{25}$

• $\frac{9}{11}$

What is the formula for Combinations?

• $\frac{n!}{\left(n-r\right)!n!}$

• $\frac{n!}{\left(n-r\right)!r!}$

• $\frac{n!}{\left(n-r\right)!}$