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A box contains 24 tiles. Each tile has certain properties:

 Each tile is made of wood or plastic.
 Each tile is red, yellow, or blue.
 Each tile is a triangle, square, pentagon, or circle.

There is exactly one tile for each combination of properties. For example, there is one red circle that is made of wood.

Steve chooses one tile, and Ellen chooses a different tile. 

 

What is the probability that both tiles are red?

 Mar 24, 2023
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For the first tile, there is a one third probability. For the second, it is just (8-1)/(24-1) = 7/23. The multiplication gets answer 7/69

 Mar 25, 2023

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