Question

In a class there are 50 students the average marks were 78 later it was
discovered that while recording marks 18 was recorded as 80 and we
recorded 30 instead of actual 90 find what will be the value of mean if
these mistakes are corrected

Answer 1

Explanation:

duty is a great way of making a great way to do 6AM in a way of making the same mistake and then the other person who choose not the person to do it and the players will have a chance of getting the ball back sideboard and the