Question

In a row of twenty-five children facing South R is 16th from the right end and B is 18th from the left end. How many children are there between R and B ?
(1) 2 (2) 3
(3) 4 (4) Data inadequate
(5) None of these

Answer 1

(a) 2 is the correct answer

Answer 2

Answer:

7 is the correct answer I know because I have learnt a formula