blackpanter101 blackpanter101

09-01-2023
Mathematics

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PLEASE HELP ME ASAP!!!!!!!!!

In a school, 10% of students have 7 ball pens, 30% of students have 3 ball pens, 40% of students have 2 ball pens and 20% of students have 1 ball pens. What is the expected number of ball pens of a student?

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