Quantitative Aptitude - Arithmetic Ability Questions

Which of the following equations has real and distinct roots?

Find the sum of interior angles of a dodecagon?

If x3 + y3 + z3 = 3(1 + xyz), P = y + z – x, Q = z + x – y and R = x + y – z, then what is the value of P3 + Q3 + R3 – 3PQR?

What is the value of 2sec2A?

PQRA is a rectangle, AP = 22 cm, PQ = 8 cm. ΔABC is a triangle whose vertices lie on the sides of PQRA such that BQ = 2 cm and QC = 16 cm .Then the length of the line joining the mid points of the sides AB and BC is

A rectangular playground ground of length 125 m and width 75 m, has a walking strip of width 3 m in the middle of the ground, along the longer side. What is the area of the ground without the walking strip?

The compound interest on Rs. 24000 at 10% per annum for 11⁄2 years, interest being compounded semi­annually is

In the following question, select the odd word from the given alternatives.