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finite math

Using digits from this set {1, 2, 3, 4, 5, 6, 7, 8, 9} , how many different 4 digit numbers can be         formed if digits cannot be repeated and the 4 digit number must be odd...

word problem

Buried treasure. Ahmed has half of a treasure map,which indicates that the treasure is buried in the desert 2x + 6 paces from Castle Rock. Vanessa has the other half of the map. Her half indicates...

Pond questions

There grows in the middle of a circular pond 10 ft. in diameter a reed which projects 1 ft. out of the water. When it is drawn down it just reaches the edge of the pond. How deep is the water.

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