Quantitative Aptitude - Arithmetic Ability Questions

A sum fetched a total simple interest of Rs.5,400 at the rate of 12.5 %/yr in 4 years. What is the sum (in Rs)?

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?

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

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

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

If a - b = 1 and ab = 6, then what is the value of a3- b3?

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

In what ratio should coffee powder costing Rs 2500/kg be mixed with coffee powder costing Rs 1500/kg so that the cost of the mixture is Rs 2250/kg?