Quantitative Aptitude - Arithmetic Ability Questions

The value of (sec245 - cot245) - (sin230 + sin260) is

A can do a work in 12 days and B in 24 days. If they work on it together for 4 days, then what fraction of work is left?

Raja and Kundan together can build a wall in 20 days, Kundan and Mahesh build the same wall in 30 days and Mahesh and Raja can build the same wall in 24 days. In how many days can all the three complete the same wall while working together?

The least number of square tiles of side 41 cms required to pave the ceiling of a room of size 15m 17cm long and 9m 2 cm broad is:

The ratio 1 : 5 can be expressed in decimal as

Deepak marks the price of his table 60% above the cost price. He gives some discount on it and earns profit of 15.2%. What is the discount percentage?

The ratio of present ages of Ramya and Saurabh is 8:7. After 10 years the ratio of their ages will be 12:11. What is Ramya's present age?

Find two numbers such that their mean proportion is 16 and third proportion is 1024.