Sir there is a mistake in the question it said that 30% of all hostlier gets grade A this means that 30% of 60% gets grade A. And u hv taken only 30%students ...Plz comment fast
Displaying ads are our only source of revenue. To help Teachoo create more content, and view the ad-free version of Teachooo... please purchase Teachoo Black subscription.
Please login to view more pages. It's free :)
Teachoo gives you a better experience when you're logged in. Please login :)
Solve all your doubts with Teachoo Black!
Teachoo answers all your questions if you are a Black user!