In a row of students, if Jhon, who is 16th from the left, and Johnson, who is 8th from the right, interchange their position, John becomes 33rd from left. How many students are there in row?
38
40
41
39
B.
40
When John interchange his position, new Position will be 33 from left and 8 from Right.
Total = 33+8-1 = 40
