Quantitative Aptitude - Arithmetic Ability Questions

What is the obtuse angle formed by the hands of a clock when the time in the clock is 2:30?

The value of sec2θ + 2tanθcotθ - tan2θ is

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If (x + y)/z = 2, then what is the value of [y/(y – z)] + [x/(x – z)]?

If a2+1=a, then the value of a3 is

At what point does the line 2x - 3y = 6 cuts the Y axis?

If an interior of a regular polygon is 170o, then the number of sides of the polygon is

The lengths of two diagonals of a rhombus are 24 cm and 32 cm. What is the side (in cm) of the rhombus?