Quantitative Aptitude - Arithmetic Ability Questions

If sin ­- 5π/3 = x, then the value of x is

How long will Ramesh take to run round a square park of edge 50 meters, if he runs at the rate of 18 km/hr?

X does 25% of a work in 20 days. Y joins X and they together finish the remaining work in 15 days. Y alone can do the whole work in ___ days.

How many three digit numbers are there in which all the digits are odd?

10 persons can do a job in X days. If 20 persons with twice the efficiency can do the same job in 5 days, then find the value of X?

P does half as much work as Q in 1/3 of the time. If together they take 15 days to complete a work, how many days will P take to do it alone?

The area of a semicircle is 308 sq.cm. Calculate its perimeter (in cm)

The diagonal of a cube is 192 cm. Its volume in cm3 will be