Quantitative Aptitude - Arithmetic Ability Questions

If a + b = 9 and a2+ b2= 61, then ab is

What would be the smaller of the two angles formed by the hour hand and the minute hand at 3:47 p.m?

Vijay can do a work in 8 hours. Vijay and Puneet together can do the same work in 6 hours. Puneet and Sachin together can do the same work in 4 hours. Sachin alone can complete the same work in how many hours?

Simple interest on a sum for eight months at 6% per annum is Rs 340.What is the value (in Rs) of sum?

From a container of milk, 5 litres of milk is replaced with 5 litres of water. This process is repeated again. Thus in two attempts the ratio of milk and water became 81 : 19. The initial amount of milk in the container was

What is the value of [12/(√5 + √3)] + [18/(√5 – √3)]?

To travel 672 km, an Express train takes 14 hours more than Rajdhani. If however, the speed of the Express train is doubled, it takes 8 hours less than Rajdhani. The speed of Rajdhani is

If the ratio of the cost price and the selling price of an article be 4:5, then the percentage of profit is: