In a row of person standing outside the post office, Vikrant is 18th from the front and Jayant is 13th from the end, while Mridul is exactly in the middle of Vikrant and Jayant. If Vikrant be ahead of Jayant and there be 52 persons in the queue, how many persons are there between Vikrant and Mridul?
1
10
2
9
3
13
4
12