In a row of students facing north, Gita is 7th from the left end and Hari is 6th from the right end. They exchange their places. Now Gita is 4th to the right of Indu, who is 15th from the left end. What was Gita’s position from the right end before the exchange?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 18th
After the exchange, Gita stands in Hari’s old place, which is 6th from the right. Indu gives the same place counted from the left.
Gita is now 4th to the right of Indu: \(15+4=19\)th from the left
This place is also 6th from the right
Students in the row \(=19+6-1=24\)
Before the exchange Gita was 7th from the left
Her position from the right then \(=24-7+1=18\)th
