Questions

3 men dig a hole in 10 days. How many days would it take for 5 men to dg the same hole?

A and B together can finish a work in 30 days. They worked for it for 20 days and then B left the work. The remaining work was done by A alone in 20 days more. In how many days can A alone finish the work?

Two circles touch each other internally. The radius of the larger circle is 6 cm and the distance between the centre is 2 cm, then the radius (in cms) of the other circle is

Kyoto Protocol's (an international treaty to reduce greenhouse gas emissions) first meeting was held at which country?

Who studied the relationship between music intervals?

Which leader adopted Orthodox Christianity as the official religion of Russia?

What is the resistance (in Ω) of an electrical component if a current of 0.2 A passes through it on application of 8 V of potential difference across it?

Which is the largest continent in the world?