Quantitative Aptitude - Arithmetic Ability Questions

In the given figure, PQ is the diameter of the circle. What is the measure (in degrees) of QSR?

What is the value of Cot 45° - (1/√3)Cosec 60°?

What is the value of 2sec2A?

Find out the odd word/letters/number/number pair from the given alternatives.

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

The value of a machine depreciates at the rate of 20% per annum. If its present value is Rs 96000, then what was the value (in Rs) of the machine 2 years ago?

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 29160, and Rs 31492.8 respectively, what is the rate of interest?

What is the area of the square, if the length of its diagonal is 13√2 units?