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Puzzle 1 



Can you draw a line through all of the edges in this picture?

Each side is broken into 2 or 3 edges, and there are also 7 edges inside that you have to cross. The line must be continuous, and cross each edge exactly once.

Five-room Puzzle

Note: this puzzle is not interactive, and cannot be clicked.

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Puzzle 2 



If...

   7/28 of 64 is 16,

   and 9/12 of 100 is 75,

   and 3/9 of 33 is 11,

what is 5/15 of 45?

Puzzle Copyright © Kevin Stone

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Puzzle 3 



Using exactly four straight lines, without taking your pen off the (virtual) paper, can you join all nine dots?

3 x 3

Note: this puzzle is not interactive, and cannot be clicked.

A Charming Puzzle – Twentieth Century Standard Puzzle Book, A. Cyril Pearson.

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Puzzle 4 



How should this word be pronounced:

GHOTI

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