Quantitative Aptitude - Arithmetic Ability Questions

If O is the centroid and AD, BE and CF are the three medians of Δ ABC with an area of 96 cm2 then the area of Δ BOD in cm2 is

 In ΔDEF measure of angle E is 90 deg. If tanD = 4/3, and DE = 6cm, then what is the length (in cm) of side EF?

If the measure of the interior angle of a regular polygon is 120 deg then how many sides does it have?

What is the value of ( 1/3 - cosec30°) ?

If sin ­-240° = x, then the value of x is

If A + B = 90 deg and Cos B = 1/3, then the value of Sin A is

15 small rods, each of length 23 2/7 m are joined to make a big rod. What then is the length of the big rod?

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