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'The Genie in the Jar' printed from https://nrich.maths.org/
Why do this
problem?
This problem
requires both clear thinking and the use of prime factors. It does
not require much knowledge of volume and capacity.
Key questions
What are the factors of $595$?
What is its most obvious factor?
Why not try dividing by $5$?
What are the factors of the result of doing this?
Why not call the "numbers" g, o and v?
Does the problem ask which number is which?
Possible extension
Learners could go on to
Stars for more
work on factors.
Possible support
Suggest doing
Three
Spinners which is a simpler problem involving factors.