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Re:A maths question for Singapore schoolkids by Aradalf on Monday April 13, 2015 @06:50PM (#9371041)
This is interestingly very similar to the Computer Science specific questions on the Oxford Mathematics Admissions Test (MAT).

For examples, look at page 16 of the 2013 exam: https://www.maths.ox.ac.uk/system/files/attachments/test13.p...

and page 16 of the 2014 exam: https://www.maths.ox.ac.uk/system/files/attachments/test14.p...

Re:A maths question for Singapore schoolkids by ballpoint on Monday April 13, 2015 @07:52PM (#9371267)
I've taken those before and I thought this was harder.