A man can do a work in 3 days alone and a women can do the same work in 9 days alone. If both are work together in how many days they finished the same work.

1, 4, 6, 9, 11, 14, 16 .................. next to 16 is

There are 8 mango trees in a straight line. The distance between each mango tree with other is 3 metres. What is the distance between the first and the eighth tree

Ram sold a watch at INR 405 and earned a profit of 20%. What was his cost price

Arun deposited INR 4000 in a bank for 3 years at an interest 15% per annum. What is the compound interest that Arun will get after 3 years

Highest common factor of 90,150,225 is