Quantitative Aptitude - Arithmetic Ability Questions

If √(1 - cos2A) = x, then the value of x is

If 15 persons can do a job in 30 days, then 30 persons with twice the efficiency can do the same job in how many days?

BE and CF are two altitudes of a triangle ABC. If AB = 6 cm , AC = 5 cm and CF = 4 cm , then the length of BE is

If p3 - q3 = (p - q) ( (p - q)2 + x p q ) then value of x is

If a+1a=2 then the vealue of a5+1a5 will be

A product was sold foe Rs. 4,500 at a profit of 12.5%. What was the amount of profit?

Assuming that the numbers in each of the following figures follow a similar pattern, select the option that can replace the question mark (?) in figure C.

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?