Quantitative Aptitude - Arithmetic Ability Questions

What is the value of sin ­-300°?

If cot(A/2) = x, then the value of x is

The diagonal of a square is 12 cm what is the length (in cm) of its side?

The value of 1/64 is equal to square of

If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b

Suresh goes on a trip on his motor-cycle and rides for 410 kms. If he rides for 5 hours at a speed of 50 km/hr, find at what speed he travels for the remaining 4 hours of the journey?

A can do a work in 36 days and B in 12 days. If they work on it together, then in how many days will they be able to do the work?