Quantitative Aptitude - Arithmetic Ability Questions

The ratio of present ages of L and N is 7 : 5. If the age of N after seven years will be 32 years, then what is the present age (in years) of L?

A solid sphere of diameter 7 cm is cut into two equal halves. What will be the increase (in cm2) in the total surface area ?

Calculate the value of √3√3 + 3, if √3 = 1.732

The height of the equilateral triangle is 9 cm. What is the radius (in cm) of the circle circumscribing the three vertices?

Find the odd one out among the following.

The value of cos220°+cos270° is

Rs 18200 is divided among X, Y and Z in the ratio of 1/3 : 1/4 : 1/2. What is the share (in Rs) of X ?

x and y are two numbers such that their mean proportion is 9 and third proportion is 243. What is the value of x and y?