Quantitative Aptitude - Arithmetic Ability Questions

A Number is increased by 20%. To get back to the orignal number, the increased number is to be reduced by

If the selling price is Rs 855 after getting a discount of 5%, what was the marked price?

If x, y, z are the three factors of a3 -7a - 6, then value of x+y+z will be

If a and b are the roots of the equation Px2 – Qx + R = 0, then what is the value of (1/a2) + (1/b2) + (a/b) + (b/a)?

The ratio of the curved surface area and total surface area of a right circular cylinder is 2 : 5. If the total surface area is 3080 cm2, then what is the volume (in cm3) of the cylinder?

If x+y+z = 0, then what is the value of x23z+y33xz+z23x ?

A T.V was sold at a profit of 5% If it had been sold at a profit of 10% , the profit would have been Rs. 1000 more. What is its cost price ?

What is the value of cosec 3π/4?