Your sister is buying you and your mom new iPhones for Christmas. Apple pre-configures phones with combinations of color, background, and case options. There are 3 color, 2 background, and 4 case choices, making 24 possible configurations for one phone. Since your phones can't share any features, and order doesn't matter, the number of different configurations for two phones is 3 * 4 * 2 * 2 * 3 * 1 = 144.

2. Your sister is going to buy
you a new iphone for
Christmas!!!

8. Apple doesn’t want to configure each phone on the
spot, so they’ve pre-packaged every possible phone
you can make with these 3 free features.
How many different phones have they configured?

9. Color 3 choices
Background 2 choices
Case 4 choices

10. Color 3 choices
x
Background 2 choices
x
Case 4 choices
__________
24 different phones

11. If the first choice can be made in m
ways, and the second in n ways, then
there are m × n ways to select m and
n.
______ _______ _______

12. But wait...
Your sister decides to buy your mom an iPhone also,
but you insist that you and your mom can’t have
ANY of the same features!!!
How many different options are there for these 2 different
phones?

13. _____ _____ _____ X ______ ______ ______

14. 3 X 4 X 2 X 2 X 3 X 1

21. Homework
p. 375 – 378 (#1 – 14)