Quantitative Aptitude - Arithmetic Ability Questions

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

Select the odd word from the given alternatives.

If tan θ + sec θ = (x – 2)/(x + 2), then what is the value of cos θ?

One of the roots of the equation x2 - 4x + k = 0 is x = 3. The other root is

If 2(3x-2) < 6-3x and 6x + 2(6-x) > 2x-2, then x can take which of the following values?

What is the diameter (in cm) of a sphere of surface area 154 sq cm?

A regular pyramid has a square base. The height of the pyramid is 22 cm and side of its base is 14 cm. Volume of pyramid is equal to the volume of a sphere. What is the radius (in cm) of the sphere?

If the side AB of an equilateral triangle ABC is equal to 12 cm. Calculate the length( in cm) of the AO, if O is the centroid of the triangle.