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Blue and White

Age 11 to 14
Challenge Level

Blue and White printable sheet
 

In the examples below identical squares of side one unit contain some circles shaded blue.
 

 


In which of the four examples is the shaded area greatest?

 

This problem is also available in French: Bleu et Blanc

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
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