Quantitative Aptitude - Arithmetic Ability Questions

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)?

What is the value of sec2θ + 1sec2θ - 1 x 12cotθ - tanθ ?

If angles of a quadrilateral are in the ratio 3:5:9:13, find the largest angle?

Find the odd word/letters/number pair from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.

What is the value of √[(1 - sinA)/(1 + sinA)]?

In a triangle PQR, ∠Q = 90°. If PQ = 12 cm and QR = 5 cm, then what is the radius (in cm) of the circum circle of the triangle?

If x=2+3,then the value of x2-x+1x2+x+1 is