Quantitative Aptitude - Arithmetic Ability Questions

Determine the value of a2+b2a3+b3 when a = 2+√3 and b = 2-√3.

What is the rate of interest (in %) if simple interest earned on a certain sum for the 3rd year is Rs 2,000 and compound interest earned in 2 years is Rs 4,160?

In the given series of numbers how many 7's are there which are immediately followed by 9 and immediately not preceeded by 5 ?

XYZ is a right angled triangle and ∠Y = 90°. If XY = 2.5 cm and YZ = 6 cm then the circumradius of ∆XYZ is

Solve the following : 3/4+{3/4 + 3/4 ÷ (3/4 + 3/4)} = ?

A man was 32 years of age when he had his first son. His wife was 35 years of age when his son attained the age of 7 years. The difference between the age of the father and the mother is _____

A can do a piece of work in 10 days and B can do it in 12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone ?

If the selling price is Rs 2125 after getting a discount of 15% what was the marked price?