Quantitative Aptitude - Arithmetic Ability Questions

If √[(1 - cosA)/2] = x, then the value of x is

The distance between the points (7,7) and (k,-5) is 13. Find k?

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 12% per annum is Rs 72. What is the value of given sum (in Rs)?

If the sum of squares of two real numbers is 41 and their sum is 9. Then the sum of cubes of these two numbers is

The greatest perfect square number of 6 digits is

What is the area (in square units) of the figure enclosed by the x-axis, the y-axis and the line x + 2y = 6 ?

What is the value of sec 30° + cot 30°?

In the following question, select the odd letter/letters from the given alternatives.