By
Edmond Shami

Riddle:

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 divisible by 396.

Python Solution:

Riddle source:

https://nrich.maths.org/1784

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