Three kids meet up at the park, and out of site of their parents, decide they are best friends forever. And in accordance with their new resolve, they decide to exchange shoes. One kid has white shoes, another has black and the third has red shoes. Each kid had on a matching pair of socks (white shoes-white socks, black shoes-black socks, red shoes-red socks).
After exchanging shoes, each kid has on one shoe from each of the other two kids (They did not exchange socks, to their mother's relief). At that point, one of the mom's discovers their hiding spot.
How many shoes will the mom have to look at to know which color of shoe each kid is wearing on each foot? That is, which color shoe each kid wars on his right foot and which color each kids wears on his left foot? Note that when you look at a shoe, you can see the color sock the kid is wearing.
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ReplyDeleteIf the kid with the red socks has a black shoe on the left foot:
- He's going to have a white shoe on the right foot.
- The kid with the black socks will have a white shoe on his left foot and a red shoe on his right.
- The kid with the white socks will have a red shoe on his left and a black shoe on his right.