Sunday, 1 January 2012

Hair Dryer

Hair Dryer

The picture shows the
ventilation holes in a hair dryer.
There are 9 holes in the
first circle and 12 holes in the next circle. How does the pattern continue?
Try to figure out an answer
before counting the holes in the picture.
Figure out the total number
of holes without counting them.

Rize Tevfik Ileri Anadolu Lisesi ,TURKEY

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