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Which of these numbers can be divided by 6?

$$2574,8961,5972,8981$$

This article on divisibility tests might be useful.

You may also like

A Close Match

Can you massage the parameters of these curves to make them match as closely as possible?

Prime Counter

A short challenge concerning prime numbers.

The Right Volume

Can you rotate a curve to make a volume of 1?

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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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