Quantitative Aptitude - Arithmetic Ability Questions

If x - y = -6 and x + y = 16, then x2- y2 is?

Find the odd number from the given alternatives.

What is the simplified value of [2/(cot A – tan A)]?

If ab+ba=1,then the value of a3+b3 is

An equilateral triangle ABC is inscribed in a circle of radius 20√3.
What is the length of the side of the triangle?

If a+b+c = 0, then (a^3 + b^3 + c^3)^2 = ?

A Rs 100 shirt is offered at 10% discount and a Rs 300 pair of trousers at 20% discount. If Pritam bought 1 shirt and 3 pairs of trousers, what is the effective discount (in %) he got?

If tan A = 1/2 and tan B = 1/3, then what is the value of tan (2A + B)?