In class 70% students are staying in hostels, 50% loves tea & 60% falls in both categories. What is the probability that a randomly picked student is neither staying in hostel nor loves tea?
This is how I did this:
Event A are students staying in hostels.
Event B are students who loves tea.
= 0.7+ 0.5- 0.6= 0.6
Student who are neither hostelite nor loves tea will be: 1-P(AUB)=1-0.6=0.4