The most difficult 11+ maths question in the 4th of Aug 2018 mock exam

The following question was answered correctly only by 5% of the candidates in the mock exam conducted on 4th of August 2018.

The question was "My calculator is broken, only the following keys work: 2, 7, x, -, and =. Using only these keys show how you can make sums that come to 2? "

Most popular answer was just "2".

However, the correct answer is 7-2-2-2 = x 2 =

Why don't you ask your son or daughter this question and see is there any possible answers for this question?

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