Quantitative Aptitude - Arithmetic Ability Questions

If x + y = 10 and xy = 4, then what is the value of x4 + y4?

The marked price of an article is Rs 960 and it is sold at a discount of Rs 192. What is the discount percentage?

In a triangle PQR, PX, QY and RZ be altitudes intersecting at O. If PO = 6 cm, PX = 8 cm and QO = 4 cm, then what is the value (in cm) of QY?

In the given figure, O is the centre of the circle and QOR = 50 deg, then what is the value of RPQ (in deg) ?

Calculate the value of √3√3 + 3, if √3 = 1.732

The value of 3x9n+1+9x32n-19x32n-6x9n-1 is equal to

The Simplified form of (b3x2a4z3)*(b4x3a3z2)/(a2b4z3) is

The number whose square is equal to the difference of the squares of 37 and 23 is:-