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A grid of people (Posted on 2002-07-09) Difficulty: 3 of 5
Imagine a "grid" of people: some number of people arranged in a number of rows and columns in a rectangular formation.

We designate person A as the shortest person in the group of the tallest people of each row. We then designate person B as the tallest person in the group of shortest people in each column.

Who is taller, A or B?

See The Solution Submitted by levik    
Rating: 3.5833 (12 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Problem with Solution | Comment 10 of 15 |
(In reply to Problem with Solution by Gamer)

You are right Gamer, a 1x1 grid does not apply, but it doesn't have to be a 1x1 grid for A and B to be the same person. Consider the following grid of people (numbers are the heights, in an arbitrary unit):

10 11 12 13
14 15 16 17
18 19 20 21

The tallest of each row are 13, 17, 21. A is the shortest, 13.

The shortest of each column are 10, 11, 12, 13. B is the tallest, lucky number 13.

There is an infinite number of grids this works for.
  Posted by Jack Squat on 2003-12-12 14:02:32

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