Quantitative Aptitude - Arithmetic Ability Questions

Dodecahedron has 20 vertices. How many edges does it have?

Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs 1200 for 2 years at 10% per annum. The sum placed on simple interest is

A 220 metres long train takes 33 seconds to cross a 440 metres long bridge. How much time (in seconds) will the train take to cross a 350 metres long bridge?

What is the reflection of the point (-2, 5) in the line x = -1?

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 A : B = 3 : 4 and B : C = 6 : 5 then A : (A + C) is

For triangle ABC, what would be the equation of median AD if co-ordinates of A, B and C are (-5,4), (-4,0) and (-2,2) respectively?

If Cot θ = 24/7, then Sin θ = ?