Recent content by Merotzu

i think it is 31 percent of the remaining 80 percent of the students.But i am getting the wrong answer by doing in this method

i got 2016 approximately.But the correct answer is 2500

could you take a moment and tell me what is the logical mistake in the solution of my problem

below is the attached problem file

TL;DR Summary: i want to understand the concept. i denote the students as X, 0.1X students passed all topics 0.1X students did not pass any topics 0.80X remaining students 0.2*0.80X students passed in one topic 0.25*0.80X students passed in 2 topics only 0.24*0.80X students passed in 4 topics...