There are 150 residents in a society. Out of them, 50 residents own a motorcycle, 60 residents own a car and 20 residents own both a car and a motorcycle. How many residents neither own a motorcycle nor a car?
Rahul travels 8km towards east, turns right and travels another 6km, and then takes two successive left turns covering 21km and 6km in each turn respectively. Finally, he takes a right turn and travels 8km further. How far is he now from his original position?