Question 1202411
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This question is a mathematical joke problem.


Its goal is to check / (to test) if a person is able to read a simple mathematical text
and if he  (or she)  does really understand the meaning of the terms that he  (or she)  reads.


The answer is :   equations  (C)  and  (D).



Those who can answer correctly go to the left;  the rest go to the right.