Question 1
In a queue, Mohan is 20th from the front and Om is 23th from the back. If there are 34 people in the queue, how many people are standing between Mohan and Om?
Overlapping case because r1 + r2 = 43 > total 34. Between B = (r1 + r2) - total - 2 = 43 - 34 - 2 = 7.