Quantitative Aptitude - Arithmetic Ability Questions

If 5x = 30-y = 6z, then what is the value of (xy + yz + zx)/xyz?

In the following question, select the odd word pair from the given alternatives.

If the ratio of the cost price and the selling price of an article be 4:5, then the percentage of profit is:

The marked price of an article is 40% more than its cost price. If 15% discount is given on the marked price, then what will be the profit percentage?

If the radius of a circle is decreased to 25% of its original value, calculate the percentage decrease in the area of the circle

If A = (-14 + 4) and B = 4 - 14, then AB = 

If xy = 48 and x2 + y2 = 100, then (x + y) is

The area of the largest sphere ( in cm2) that can be drawn inside a square of side 18 cm is