Quantitative Aptitude - Arithmetic Ability Questions

What is the difference between the maturity values, if Rs. 12500 is invested for 2 years at 20% per annum simple interest and compound interest?

The sum of 10 terms of the arithmetic series is 390. If the third term of the series is 19. Find the first term

The simplified form of (x + 3)2 + (x - 1)2 is

For triangle ABC, find equation of median AD if co­ordinates of points A, B and C are (2,­4), (3,0) and (5,­2) respectively?

If x1x2x3 = 4(4 + x1 + x2 + x3 ), then what is the value of [1/(2 + x1 )] + [1/(2 + x2 )] + [1/(2 + x3 )]?

Expand and simplify (x + 5)2 + (x - 3)2

What is the value of (cot60 + 1/√3) ?

There is 40% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 36000 after 2 years at the same rate?