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Constellation Sudoku

Age 14 to 18
Challenge Level Yellow starYellow star
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Solution of Constellation Sudoku


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Digit Sum

What is the sum of all the digits in all the integers from one to one million?

Eight Dominoes

Using the 8 dominoes make a square where each of the columns and rows adds up to 8

Two and Two

How many solutions can you find to this sum? Each of the different letters stands for a different number.

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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.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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