The weights of 4 boxes are 20, 40, 60 and 90 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?
A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series. Oxygen, Toil, Arouse, Arson, Tenuous, ?
Amar moved 20km towards east in car from his home to reach hospital. From there he turned left and moved 30km and again move 20km left to reach his school. How far is his school from hospital?