perplexus.info :: General : 12 chairs

12 chairs (Posted on 2010-09-14)

If 9 people are seated in a row of 12 chairs, then at least one consecutive set of 3 chairs is occupied by people.

Prove it.

See The Solution Submitted by Ady TZIDON

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re: Sparseness .....spoiler

| Comment 2 of 5 |

(In reply to Sparseness by ed bottemiller)

....If any of the three E were adjacent, the set would be shorter.....

WHY? EX: SSSSSEESSESS

Try to reword your explanation.

Posted by Ady TZIDON on 2010-09-14 12:51:56

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