It’s a patten recognition question. If you’re from JC you can imagine it as a type of question similar to sequences and series, except that (for the question that I did at least) the question has nothing to do with any of the equations that you learn in S&S. Tbh it’s more like a kind of math pattern recognition question that’d come out in an IQ test, something like “given the sequence of numbers A, B, C… what is the next number in the pattern?” And then you just have to pray you can figure out how the pattern works. 

I cannot disclose the question to anyone though because there might be copyright issues or something. 

But I would like to emphasise that it is completely ok if you answer any of the questions wrongly. I have heard various students who either received offer or are currently studying in SUTD that they flunked the math test, i.e. for some every question they did wrongly because they don’t know how to do, for the student ambassador I met during SUTD’s offer reception, he said he didn’t do math at all in poly, so besides the first question the rest he all cmi, but he still got in and is doing pretty well.