Answer:
Sorry cal put it incorrectly It's 1.8.
Answer:
188
Step-by-step explanation:
I found and fixed my mistake sorry
Answer:
64
Step-by-step explanation:
![mean=\frac{sum\ of\ total\ number\ of\ score}{total\ number\ of\ students}](https://tex.z-dn.net/?f=mean%3D%5Cfrac%7Bsum%5C%20of%5C%20total%5C%20number%5C%20of%5C%20score%7D%7Btotal%5C%20number%5C%20of%5C%20students%7D)
we have given that mean of 9 students is 84
so total score of 9 students = mean×9
=84×9=756
and we have given mean score of exam is 82 and there is total 10 students so the total score of 10 students =10×82
=820
so the unreadable score = score of 10 students -score of 9 students =820-756=64