Quantitative Aptitude - Arithmetic Ability Questions

If θ>0, be an acute angle, then the value of it in degrees satisfying cos2θ-3cosθ+2sin2θ=1 is

What is the third proportional to 10 and 25?

α and β are the roots of the quadratic equation x2 – x – 1 = 0. What is the value of α8 + β8?

The greatest perfect square number of 6 digits is

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

The point where the 3 medians of a triangle meet is called

The difference between the largest and the smallest angles of a triangle whose angles are in the ratio of 5:3:10 is

A mixture of 240 litres of juice and water contains 15% water. How much more water (in litres) should be added to this so that the strength of water will become 25% in the new mixture?