Quantitative Aptitude - Arithmetic Ability Questions

If sec2A cosec2A = x, then x is

In a fraction when 3 is added to its numerator and denominator it becomes 4/5. And it becomes 1/2 when 2 is subtracted from both the numerator and denominator. Find the fraction.

Calculate the simple interest if Rs. 1800 is invested for 10 years at a rate of 5% per annum.

A sum of money invested for 2 yrs and 9 months at the rate of 8% simple interest per annum became Rs.732 at the end of the period. What was the sum that was initially invested?

If a = 3+23-2, b = 3-23+2 then a2+b2-ab ?

If cosec 45° - sin 30° = x, then x is

 What is the value of (cosec45 + √3/2) ?