A) One
B) Two
C) Three
D) Four Rules: If there are N persons standing in a row and ranks of a person both from the top and from the bottom are Tr and Br, then the rules are (i) \[N=Tr+Br-1\] (ii) \[Tr=(N+1)-Brand\] (iii) \[Br=(N+1)-Tr.\]
Correct Answer: B
Solution :
Clearly there are two such pairs only namely (4, 2); (1, 3)You need to login to perform this action.
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