The product of two number is 4107. If the HCF of the number is 37. The greatest number is

The speed of first train is 45km/hr. and the speed of another train is 10m/sec. find the ratio of their speed?

A rational number between $${3\over4} $$ and $${3\over8} $$ is :

The average of three numbers is 40. The first number is twice the second and the second one is thrice the third number. The difference between the largest and the smallest numbers is

A and B can together complete a piece of work in 18 days. B and C can together complete the same work in 24 days and A and C can together complete it in 36 days. In how many days can A. B and C, working together, complete this piece of work?

In a ∆ABC ∠A : ∠B : ∠C  = 2 : 3 : 4 . A line CD drawn || to AB, then the ∠ACD is: 

What will be remainder if (13)³ is subtracted from (66)² ?

If the speed of the boat in still water is 20 km / h and the speed of the stream is 5 km / h, then how long will it take for the ferry to travel 100 km with the speed of the stream?