Quantitative Aptitude - Arithmetic Ability Questions

If 3a – (3/a) – 3 = 0, then what is the value of a3 – (1/a3) + 2?

If 1/√(1 -­ sin2A) = x, then the value of x is

Find the median, mode and mean of 9, 5, 8, 9, 9, 7, 8, 9, 8.

When Gopal walks from A to B and returns from B to A on cycle, then it takes him 46 minutes. By walking both ways, it takes him 75 minutes. If he rides cycle both ways then what will be the total time (in minutes)?

The sum of the ages of Rohit and Ankit is 78. Rohit's age is twice the age of Ankit. What is the age (in years) of Rohit?

If 177 is divided into 3 parts in the ratio 1/2 : 2/3: 4/5, then the second part is

The solution set of 4x - 3y = 47 and 3x + y = 32 is

The ratio of two numbers is 5 : 6. If their product is 1470, then what is the sum of both the numbers?