Quantitative Aptitude - Arithmetic Ability Questions

A dealer marks his goods 20% above cost price. He then allows some discount on it and makes a profit of 8%. The rate of discount is

If a + b = 10 and ab = 21, then the value of (a - b)2 is

In what ratio is the segment joining the points (2,5) and (­6,­10) divided by the y­axis?

If a - b = 2 and ab = 15, then what is the value of a3- b3?

What is the slope of the line, perpendicular to the line 3x - 6y = 4?

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

Four pairs of words are given. Find the odd one out.

The time taken by a train 160 m long, running at 72 km/hr, in crossing an electric pole is