Q. Three persons A, B and C are standing in a queue not necessarily in the same order. There are 4 persons between A and B, and 7 persons between B and C If there are 11 persons ahead of C and 13 behind A, what could be the minimum number of persons in the queue?

a. 22
b. 28
c. 32
d. 38
Correct Answer: a. 22

Explanation :

Three persons A B C

It will be minimum in case of 3B4A2C10 arrangement.
Digits represent number of person between them/ahead/behind