Quantitative Aptitude - Arithmetic Ability Questions

A shopkeeper marks his goods 50% more than the cost price and allows a discount of 25%. His profit or loss percentage is:

On dividing 24a2b2 by 6b2, we will get

If 5x + 1/x = 10, then x2 + 125x2 is equal to

1/(secA + tanA) is equal to

A man sells an article at 15% profit. If he had sold it for . 6 more, he would have gained 18%. The man bought the article for

∆PQR is right angled at Q. If cosecP = 17/15, then what is the value of sinR ?

There are 8 equidistant points A, B, C, D, E, F, G and H (in same order) on a circle. What is the value of ∠FDH (in degrees)?

The angles of a triangle are in the ratio 1 : 1 : 4. If the perimeter of the triangle is k times its largest side, then what is the value of k?