The least number that should be added to 2,397 so that the sum is exactly divisible by 3, 4, 5 and 6 ?

A hollow copper pipe is 22 cm long and its external diameter is 28 cm. If the thickness of the pipe is 3 cm and iron weighs 8.5 g/cm³ , then the weight of the pipe is closest to:

A and B can together complete a task 40 days. They worked together for 30 days and then left. A finished the remaining task in next 22 days. In how many days A alone can finish the task?

A discount of 20% in the price of rice enables X to buy 5 kg more rice for ₹100. What is the reduced price of rice per kg?

A train 400 m long passes a pole in 20 seconds. What is the speed of the train?

If 1³ + 2³ + .....+103 = 3025 then 4 + 32 + 108 + ..... 4000 is equal to -

If the height of a given cone be doubled and radius of base remains the same, the ratio of the volume of the given cone to that the second cone will be -