$_4P_2$  

(a)  

 $_7C_4$  

(a)  

A box contains 9 tiles, each a different color. Michael is going to select 3 tiles without replacement. How many different groups of 3 colored tiles can be created?

(a)  

To log on to the school computer system, each student must choose a password with 3 numbers and 2 letters in that order. Each letter and number may be used only once. How many different passwords are possible?

In how many different ways can 2 students be chosen out of a 27-member class to be elected president and vice president?

You are rolling a die. Find the following probabilities:

a) P(4 or odd number)

b) P(8)

c) P(1 or a 2)

You are rolling 2 die. What are the following probabilities:

a) P(3 and then an even)

b) P(odd and even)

c) P(<4 and 5)

Playing Cards in a standard deck, draw 2 with replacement:

a) P(queen then a black)

b) P(ace and then a 8)

c) P(face card and then a face card)

d) P(red card and then black 2)

e) P(2 kings)

Trying to match your socks. There are 40 socks in your drawer. 10 red, 5 yellow, 9 green, 4 blue, 8 purple, 4 black.

What are the following probabilities without replacement:

a) P(red and black)

a) P (2 green)

c) P(purple then not black)

d) P(pair of yellow)