PROBLEM # 1
One out of 27 otherwise identical balls is overweight. How can it be identified after 3 weighings?

PROBLEM #2
Town A and town B are 99 km apart. There are 98 km posts between them. On each post is the distance to A and the distance to B. On how many posts are only 2 different digits used? (for example, the post that says 'A 33, B 66' only uses 2 digits).

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Problems from 01/20/11

PROBLEM # 1
The area of the wall you are going to paint is 50 feet square. If the width is half the height what are the dimensions of the wall?

SOLUTION 1
5x10.


PROBLEM #2
Give two rectangles where the perimeter of the first is larger than the second but it has a smaller area?

SOLUTION 2
1x10 and 3x5.

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