Quantitative Aptitude - Arithmetic Ability Questions

In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If lengths of PS, SQ and PR are 6 cm, 9 cm and 12.5 cm respectively, what is the length of TR?

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

Select the odd word from the given alternatives.

The least number that must be subtracted from 1294 so that the remainder when divided by 9, 11, 13 will leave in each case the same remainder 6 is:

Find the odd one out.

Calculate the value of 55-5, if the value of √5 = 2.236.

An equilateral triangle ABC is inscribed in a circle of radius 20√3.
The centroid of the triangle ABC is at a distance d from the vertex A. What is d equal to ?

a and b are irrational numbers such that a+b = q is a rational number; then a­b is