Quantitative Aptitude - Arithmetic Ability Questions

The area of a triangle with vertices A (0, 8) , O (0,0) and B (5, 0) is:

If x2+1x2 = 2, then the value of x - 1x is

If a is positive and a2+1a2 = 7, then a3 + 1a3 = ?

A number is greater than thrice its reciprocal by 26/3. What is the number?

Sum of three consecutive integers is 51 . The middle one is:

In the given figure, AB, AE, EF, FG and GB are semicircles. AB = 56 cm and AE = EF = FG = GB. What is the area (in sq.cm) of the shaded region?

A machine depreciates in value each year at the rate of 10% of its previous value. However, every second year there is some maintenance work so that in that particular year, depreciation is only 5% of its previous value. If at the end of the fourth year, the value of the machine stands at Rs 1,46,205, then find the value of machine at the start of the first year.

A sum becomes Rs 10000 in 10 years on simple interest at the rate of 10% per annum. What is the total interest (in Rs) of the 10 years?