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The final mathematics exam at a certain school contains questions of equal difficulty, and is matched to the students' past performance in mathematics. Four students who take the exam have averages of 25%, 50%, 60% and 80%. What is the probability that at least one of these students will get the first question on the exam correct?

 Jan 10, 2018
 #1
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Is this  valid story problem? Because I would need a number of questions to go off of 

 Jan 10, 2018
 #2
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There isn't enough information to solve the problem

 Jan 11, 2018

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