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A simplified account of special relativity and the twins paradox.

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11 to 14

A cinema has 100 seats. How can ticket sales make £100 for these different combinations of ticket prices?

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5 to 11

This article for teachers describes NRICH's work from 2010 to 2011 with Creative Partnerships and three Bristol primary schools.

problem

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7 to 14

Can you select the missing digit(s) to find the largest multiple?

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