Quantitative Aptitude - Arithmetic Ability Questions

A sum becomes Rs 1392 in 2 years and Rs 1488 in 3 years at simple interest. What is the rate (in percentage) of interest per annum?

A wholesaler sells a watch to a retailer at a profit of 33% and the retailer sells it to a customer at a loss of 20%. If the customer pays Rs 2,181.2, what had it cost the wholesaler?

If a2+b2+c2=83and a+b+c=15 then the value of ab+bc+ca is

If Cot θ = 21/20, then what is the value of Sec θ?

The area of the largest triangle that can be inscribed in a semicircle of radius 6m is

ABCD is a quadrilateral inscribed in a circle (radius = ). The bisectors of the angles DAB and BCD intersect the circle at X and Y, respectively. What is the length of the straight line XY?

Rs. 782 is divided into 3 parts in the ratio 12:23:34, the first part is 

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