Question 1168473
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In your post, what this passage means 


<pre>
    . . . "randomly selecting the correct students" . . . 
</pre>

What are the &nbsp;INCORRECT &nbsp;students in this case ?



Formulated in this form, &nbsp;the post is not a &nbsp;Math question, at all.



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Be sure, &nbsp;that I understand your question properly from its context;

but it is not a way to compose a Math problem.



In a true Math problem, its meaning should be clear from the text, not from the context.