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 Sin θ = 12/13, then what is the value of Cot θ?

What is the value of (cot30°+ 2/√3) ?

The point R(a,b) is first reflected in origin to R1 and R1 is reflected in X-axis to (-5,1). The co-ordinates of point R are?

If 'Q ' means ' +', 'J ' means ' X',T ' ' means '- ' and 'K ' means '÷ ', then what is the value of18K3Q7J ?

Three clocks are designed to alarm in every hour, two hours and three hours respectively. If they all alrmed together three hours before, then after how many hours will they next alarm together?

In the following question, select the odd letter group from the given alternatives.

Simple interest on a sum for 5 years is equal to 20% of the principal. In how many years interest will be equal to the principal?