The answer can be in form of an integer, decimal e.g. 2.3 or
fraction e.g. -3/4.
An answer in the form of a fraction has to be the irreducible form. 1/3 could be correct answer, but 2/6 will not be accepted.
Similarly, for a decimal e.g. answer like 0.25 (instead of 1/4) is fine. 0.3333333
(instead of 1/3) is not.
Each test has a time limit. After the time is up, your answers will be automatically submitted.
A correct answer gives you +1, no answer 0 and a wrong answer -1.
You can submit your answer for any given equation by hitting enter, the answer is saved but before finishing
the test you can come back and change it again.
If you submit an invalid answer (e.g. a/2), your response will be
marked as invalid. You can always go back and forth between questions by pressing the Ctrl + LeftArrowKey and Ctrl + RightArrowKey