Quantitative Aptitude - Arithmetic Ability Questions

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 18% per annum is Rs 81. The sum is ____.

If Cot θ = 21/20, then what is the value of Cosec θ?

Akash's monthly income is Rs. 9600. His monthly expenditure is 60% of his income. What is his saving per month?

What is the value of [2 cot × (p – A)/2]/[1 + tan2× (2p – A)/2]?

What least number must be subtracted from 518, so that the sum is completely divisible by 13?

Total surface area of a cube is 486 sq cm, find sum of length of all its edges?

P and Q together can make a door in 12 days. They started the work together but after 8 days P left the work. The remaining work is completed by Q alone in 7 more days. In how many days can P alone complete the entire work?

∆DEF is right angled at E. If tanD = 4/3, then what is the value of tanF ?