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396

Age 14 to 16 Challenge Level:

The four digits 5, 6, 7 and 8 are put at random in the spaces of the number below:

3 _ 1 _ 4 _ 0 _ 9 2

  • Estimate the probability that the answer will be a multiple of 396.
  • Calculate the probability and explain your answer.
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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