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14 March 2009

LET ME COUNT THE WAYS

1) Tina has 3 shirts-red, blue, and yellow. She also has 2 skirts-
black and white. Each day, she wears a different shirt with a
different skirt.

A) For how many days can she do this before she must repeat and

Draw pictures of Tina and color if you wish.

There is also a chart called a TREE that can help Tina to know
which outfit is next to wear. It looks like this:

|-----Black
|---Red-------|
| |-----White
|
|
| |-----Black
|--Blue-------|
| |-----White
|
|
| |-----Black
|--Yellow-----|
|-----White



So, you can see all the possibilities and even count them.

C) Uh oh, Tina accidentally ripped her yellow shirt and cannot wear
it anymore. How many outfits does she have now? Draw a tree.

2) When Billy comes home from school each day, he gets a snack
and a drink. His Mom lets him choose either a piece of fruit, a
cookie, or a peanut butter sandwich. He can drink juice,
milk, or a soda.

A) Can you make a TREE that explains all the possibilities of
snacks and sodas? How many snack and drink combinations are there?

B) How many combination are there if the drink is MILK?

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