perplexus.info :: Just Math : Squares and Rectangles

Squares and Rectangles (Posted on 2004-01-21)

There is a grid of 20 squares by 10 squares. How many different rectangles are possible?
(Note that square is a rectangle).

See The Solution Submitted by Ravi Raja

Rating: 2.0000 (5 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

question of form

| Comment 13 of 22 |

does this problem want to know how many different rectangles I can outline or does it want to know how many forms or rectangles can be created from a 10by20 grid. for example there are 200 1 by 1 rectanges but each is the same.

Posted by slothman on 2004-01-22 00:23:34

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