Quantitative Aptitude - Arithmetic Ability Questions

What is the diameter (in cm) of a sphere of surface area 6.16 sq cm?

The external and the internal radii of a hollow right circular cylinder of height 15 cm are 6.75 cm and 5.25 cm respectively. If it is melted to form a solid cylinder of height half of the orignal cylinder, then the radius of the solid cylinder is

If 12x2 - ax + 7 = ax2 + 9x + 3 has only one (repeated) solution, then the positive integral solution of a is

The diagonals of 2 squares M and N are in the ratio 2:1. The ratio of their areas is

Which of the following numbers is not a prime number?

The value of Sin 60 is

How many spherical balls of radius 1 cm can be made by melting a hemisphere of radius 6 cm?

ABCD is a cyclic quadrilateral of which AB is the diameter. Diagonals AC and BD intersect at E. If ∠DBC = 35°, Then ∠AED measures