Quantitative Aptitude - Arithmetic Ability Questions

If x1x2x3 = 4(4 + x1 + x2 + x3 ), then what is the value of [1/(2 + x1 )] + [1/(2 + x2 )] + [1/(2 + x3 )]?

ΔXYZ is right angled at Y. If m∠X = 30 deg, then find the value of (sinZ + √3).

√[(1 ­ sinA)/(1 + sinA)] is equal to?

If x = a cosθ+ b sinθ and y = b cosθ- a sinθ, then x2 + y2 is equal to

Tanya got an increment of 15% in her salary. If her enhanced salary is Rs.14,030. What was her original salary?

If a + b = 1, then a4 + b4 - a3 - b3 - 2a2b2 + ab is equal to

The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is

If the ratio of marked price and selling price is 11 : 10, then what is the discount percentage?