. . . in which case, please tell whoever set the question to check it for typos!
In the meantime, stop worrying about it and do something more interesting instead!
I try to answer questions across a wide range of topics here but mathematics is my specialist field. I've got a university honours degree in it, I've contributed to books on it (with one standard proof bearing my name after I improved the way that it had been done for centuries), I've written articles on it, I've taught it up to the equivalent of your Grade 12 and I've represented the UK at an international conference on maths education in Australia. So, when I tell you that the question you've been given is TOTALLY MEANINGLESS, I hope that you'll be prepared to take my word for it ;-)