Quantitative Aptitude - Arithmetic Ability Questions

What is the value of 1/√2 Cot 30° + 1/√3 Cosec 60°?

Coefficient of x2 in (x + 9)(6 -­ 4x) is

If a : b is 32 : 35 and b : c is 21 : 32, then a : c is?

What is the value of 513-144 - 81 - 64 ?

Ratio of present ages of P and Q is 9 : 4. The difference between their ages is 20 years. What will be the sum (in years) of their ages after 10 years?

Find the volume (in cub.cm) of a sphere of diameter 42 cm

In a Village panchayat society 574 names are enlisted as 'below poverty level'. If 14% of the villagers are below poverty level, the total number of villagers is?

∆ABC inscribed in a circle so that BC is a diameter. The tangent at a point C intersects BA when produced at a point D. If ∠ABC=36°then the value of ∠ADCis