Quantitative Aptitude - Arithmetic Ability Questions

If 2x2+2y2=4a the find the value of 2ax2-a+2ay2-a

The measures of the four angles of a quadrilateral are in the ratio 1:2:3:4. What is the measure of the biggest angle?

What is the value of Sin 30° - Cosec 45°?

If a + b = 4 and ab = -5, then what is the value of a3 + b3?

A root of equation ax2 + bx + c = 0 (where a, b and c are rational numbers) is 5 + 3√3. What is the value of (a2 + b2 + c2)/(a + b + c)?

Select the odd number from the given alternatives.

What is the value of (cosec30 - 1/√3)?

ΔDEF is similar to ΔGHI. Length of DE is 9 cm and length of the corresponding side GH is 16 cm. What is the ratio of areas of Δ DEF : Δ GHI?