Quantitative Aptitude - Arithmetic Ability Questions

The maturity value of a certain sum after two years at 20% p.a. interest compounded annually is Rs. 14,400/-. Find the Principal amount.

The selling price of an article is 8/5th of its cost price. Then the gain percentage is

A missile travels at 1278 km/h. How many metres does it travel in one second?

The average of 100 observations was calculated as 35.It was found later, that one of the observation was misread as 83 instead of 53. The correct average is :

The sum of a fraction and 3 times its reciprocal is 37/10. What is the fraction?

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

Three solid spheres have their radii r1, r2 and r3. The spheres are melted to form a solid sphere of bigger radius. Then the radius of the new sphere is

The length of diagonal BD of a parallelogram ABCD is 36 cm. P and Q are the centroids of triangle ABC and triangle ADC respectively. What is the length (in cm) of PQ?