Subject :IMO Class : Class 7
Thirty six vehicles (only cars and scooters) are parked in a parking lot in a single row. After the first car, there is one scooter. After the second car, there are two scooters. After the third car, there are three scooters and so on. The number of scooters in the second half of the row is _________.
Please explain !!!
Please explain !!!