math challenge

Week of August 11 - 17, 1997

Yakkity Yak

Janet woke up this morning as a blonde.

If Janet talks to Kathy, Janet's hair color changes to red if it is blonde, and to blonde if it is red. It doesn't change if her hair is brown.

If Janet talks to Larry, her hair color changes to brown if it is blonde, and to red if it is brown. If it is red, it stays the same color.

If Janet talks to Mary, her hair color changes to brown if it is red, and to red if it is brown. If it is blonde, it stays the same color.

At the end of the day, Janet's hair was blonde. Janet talked to Person "X", then to Person "Y", and once again to Person "X". Who are Person "X" and Person "Y"?


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