The weights of 4 boxes are 100, 90, 80 and 40 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?
I hire a taxi from my home to go to my workplace. The fare system in the city is such that for the first kilometre, I am charged Rs 25, and after that, I am charged Rs 6 per kilometre. If my workplace is 10 km far from my home, what amount do I have to pay if I go by taxi?
Ajit, starting from a fixed point, goes 10 m towards North and then after turning to his right he goes 10 m. Then he goes 5,10 and 10 meters after turning to his left each time. How far is he from his starting point?