Quantitative Aptitude - Arithmetic Ability Questions

If a3 + 3a2 + 9a = 1, then what is the value of a3 + (3/a)?

The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is

What is the value of √2 Sec 45° + (1/√3)Tan 30°?

If θ>0, be an acute angle, then the value of it in degrees satisfying cos2θ-3cosθ+2sin2θ=1 is

If the value of √30  is approximately 5.477, then what is the approximate value of 56 ?

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

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

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