In a row of 40 children, A is 13th from the left end and B is ninth from the right end. How many children are there between A and C if C is fourth to the left of B?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 14
Positions can be compared only when they are counted from the same end. In a row of \(n\) children, the one \(r\)th from the right is \((n-r+1)\)th from the left.
A is 13th from the left.
B is 9th from the right: \(40-9+1=32\)nd from the left.
C is 4th to the left of B: \(32-4=28\)th from the left.
Children between A (13th) and C (28th): \(28-13-1=14\)
