All 91 people are standing in a row facing north. Fi is 12th from the right end while Yu is 86th from the left end. How many people are there between Fi and Yu?

Total people= 91

Fi is 12th from the right end, so his position from the left end is
=91−12+1=80
People between=(Higher position−Lower position)−1

Number of people between Fi and Yu = difference of positions of Fi and Yu from the left−1

Here, Yu's position is 86th and Fi's position is 80th:

People between=(86−80)−1=5

Thus, correct option is (c).