If x and y are negative integers and x-y=1, which is the least possible value for xy?

Noman is 3 times as old as Abbas is now. Six years from now, he will be twice as old as Abbas will be then. Ho...

In a solution of 60 litre of suger and water, 20% is sugar. How much water (In litre) must be added to make a...

An amount of 320 is divided among A, B and C such that A receives 30 more than B and C receives 20 more than A...

Siam needs m minutes to do a task. After he works for k minutes, what part of the task remains incomplete?

Taraq drives from city A to B at 40 km per hour and returns over the same road at 30 km per hour and spends 8...

Choose which pair of numbers comes next in the following serise : 8,11,21,15,18,21 22?