Quantitative Aptitude - Arithmetic Ability Questions

If cos -300° = x, then the value of x is

What is the value of equation a3+b3+c3-3abc if a2+b2+c2=ab+bc+ca+4 and a+b+c = 4.

ΔPQR is right angled at Q. If secP = 13/5, then what is the value of sinR ?

What would be the compound interest of Rs. 25000 for 2 yrs. at 5% per annum?

The maturity value of a certain sum after two years at 20% p.a. interest compounded annually is Rs. 14,400/-. Find the Principal amount.

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

In a triangle the length of the side opposite the angle which measures 30° is 9 cm, what is the length of the side opposite to the angle which measures 60°?

If x4+1x4=119,then the value of x-1x is